diff --git a/check_process b/check_process
index bc8552a..d723240 100644
--- a/check_process
+++ b/check_process
@@ -1,14 +1,15 @@
-;; Nom du test
-# Commentaire ignoré
+# See here for more information
+# https://github.com/YunoHost/package_check#syntax-check_process-file
+
+# Move this file from check_process.default to check_process when you have filled it.
+;; Test complet
 	; Manifest
 		domain="domain.tld"	(DOMAIN)
 		path="/path"	(PATH)
 		username="john"
 		name="john"
 		email="admin@example.com"
-		password="password"
-#		is_public="Yes"	(PUBLIC|public=Yes|private=No)
-		is_public=1	(PUBLIC|public=1|private=0)
+        is_public=1	(PUBLIC|public=1|private=0)
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=1
@@ -26,7 +27,9 @@
 	Level 1=auto
 	Level 2=auto
 	Level 3=auto
-	Level 4=0
+# Level 4: If the app supports LDAP and SSOwat, turn level 4 to '1' and add a link to an issue or a part of your code to show it.
+# If the app does not use LDAP nor SSOwat, and can't use them, turn level 4 to 'na' and explain as well.
+	Level 4=na # Not supported by the core app yet
 	Level 5=auto
 	Level 6=auto
 	Level 7=auto
@@ -34,5 +37,5 @@
 	Level 9=0
 	Level 10=0
 ;;; Options
-Email=
-Notification=none
+Email=anmol@datamol.org
+Notification=yes
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 7472207..398f4ba 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -16,7 +16,7 @@ location __PATH__ {
   try_files $uri $uri/ index.php;
   location ~ [^/]\.php(/|$) {
     fastcgi_split_path_info ^(.+?\.php)(/.*)$;
-    fastcgi_pass unix:/var/run/php5-fpm.sock;
+    fastcgi_pass unix:/var/run/php5-fpm-__NAME__.sock;
 
     # Filename to be changed if dedicated php-fpm process is required
     # This is to be used INSTEAD of line above
diff --git a/conf/php-fpm.conf b/conf/php-fpm.conf
new file mode 100644
index 0000000..8affbc2
--- /dev/null
+++ b/conf/php-fpm.conf
@@ -0,0 +1,392 @@
+; Start a new pool named 'www'.
+; the variable $pool can we used in any directive and will be replaced by the
+; pool name ('www' here)
+[__NAMETOCHANGE__]
+
+; Per pool prefix
+; It only applies on the following directives:
+; - 'slowlog'
+; - 'listen' (unixsocket)
+; - 'chroot'
+; - 'chdir'
+; - 'php_values'
+; - 'php_admin_values'
+; When not set, the global prefix (or /usr) applies instead.
+; Note: This directive can also be relative to the global prefix.
+; Default Value: none
+;prefix = /path/to/pools/$pool
+
+; Unix user/group of processes
+; Note: The user is mandatory. If the group is not set, the default user's group
+;       will be used.
+user = __USER__
+group = __USER__
+
+; The address on which to accept FastCGI requests.
+; Valid syntaxes are:
+;   'ip.add.re.ss:port'    - to listen on a TCP socket to a specific address on
+;                            a specific port;
+;   'port'                 - to listen on a TCP socket to all addresses on a
+;                            specific port;
+;   '/path/to/unix/socket' - to listen on a unix socket.
+; Note: This value is mandatory.
+listen = /var/run/php5-fpm-__NAMETOCHANGE__.sock
+
+; Set listen(2) backlog. A value of '-1' means unlimited.
+; Default Value: 128 (-1 on FreeBSD and OpenBSD)
+;listen.backlog = 128
+
+; Set permissions for unix socket, if one is used. In Linux, read/write
+; permissions must be set in order to allow connections from a web server. Many
+; BSD-derived systems allow connections regardless of permissions. 
+; Default Values: user and group are set as the running user
+;                 mode is set to 0660
+listen.owner = www-data
+listen.group = www-data
+;listen.mode = 0660
+ 
+; List of ipv4 addresses of FastCGI clients which are allowed to connect.
+; Equivalent to the FCGI_WEB_SERVER_ADDRS environment variable in the original
+; PHP FCGI (5.2.2+). Makes sense only with a tcp listening socket. Each address
+; must be separated by a comma. If this value is left blank, connections will be
+; accepted from any ip address.
+; Default Value: any
+;listen.allowed_clients = 127.0.0.1
+
+; Specify the nice(2) priority to apply to the pool processes (only if set)
+; The value can vary from -19 (highest priority) to 20 (lower priority)
+; Note: - It will only work if the FPM master process is launched as root
+;       - The pool processes will inherit the master process priority
+;         unless it specified otherwise
+; Default Value: no set
+; priority = -19
+
+; Choose how the process manager will control the number of child processes.
+; Possible Values:
+;   static  - a fixed number (pm.max_children) of child processes;
+;   dynamic - the number of child processes are set dynamically based on the
+;             following directives. With this process management, there will be
+;             always at least 1 children.
+;             pm.max_children      - the maximum number of children that can
+;                                    be alive at the same time.
+;             pm.start_servers     - the number of children created on startup.
+;             pm.min_spare_servers - the minimum number of children in 'idle'
+;                                    state (waiting to process). If the number
+;                                    of 'idle' processes is less than this
+;                                    number then some children will be created.
+;             pm.max_spare_servers - the maximum number of children in 'idle'
+;                                    state (waiting to process). If the number
+;                                    of 'idle' processes is greater than this
+;                                    number then some children will be killed.
+;  ondemand - no children are created at startup. Children will be forked when
+;             new requests will connect. The following parameter are used:
+;             pm.max_children           - the maximum number of children that
+;                                         can be alive at the same time.
+;             pm.process_idle_timeout   - The number of seconds after which
+;                                         an idle process will be killed.
+; Note: This value is mandatory.
+pm = dynamic
+
+; The number of child processes to be created when pm is set to 'static' and the
+; maximum number of child processes when pm is set to 'dynamic' or 'ondemand'.
+; This value sets the limit on the number of simultaneous requests that will be
+; served. Equivalent to the ApacheMaxClients directive with mpm_prefork.
+; Equivalent to the PHP_FCGI_CHILDREN environment variable in the original PHP
+; CGI. The below defaults are based on a server without much resources. Don't
+; forget to tweak pm.* to fit your needs.
+; Note: Used when pm is set to 'static', 'dynamic' or 'ondemand'
+; Note: This value is mandatory.
+pm.max_children = 10
+
+; The number of child processes created on startup.
+; Note: Used only when pm is set to 'dynamic'
+; Default Value: min_spare_servers + (max_spare_servers - min_spare_servers) / 2
+pm.start_servers = 2
+
+; The desired minimum number of idle server processes.
+; Note: Used only when pm is set to 'dynamic'
+; Note: Mandatory when pm is set to 'dynamic'
+pm.min_spare_servers = 1
+
+; The desired maximum number of idle server processes.
+; Note: Used only when pm is set to 'dynamic'
+; Note: Mandatory when pm is set to 'dynamic'
+pm.max_spare_servers = 3
+
+; The number of seconds after which an idle process will be killed.
+; Note: Used only when pm is set to 'ondemand'
+; Default Value: 10s
+;pm.process_idle_timeout = 10s;
+ 
+; The number of requests each child process should execute before respawning.
+; This can be useful to work around memory leaks in 3rd party libraries. For
+; endless request processing specify '0'. Equivalent to PHP_FCGI_MAX_REQUESTS.
+; Default Value: 0
+pm.max_requests = 500
+
+; The URI to view the FPM status page. If this value is not set, no URI will be
+; recognized as a status page. It shows the following informations:
+;   pool                 - the name of the pool;
+;   process manager      - static, dynamic or ondemand;
+;   start time           - the date and time FPM has started;
+;   start since          - number of seconds since FPM has started;
+;   accepted conn        - the number of request accepted by the pool;
+;   listen queue         - the number of request in the queue of pending
+;                          connections (see backlog in listen(2));
+;   max listen queue     - the maximum number of requests in the queue
+;                          of pending connections since FPM has started;
+;   listen queue len     - the size of the socket queue of pending connections;
+;   idle processes       - the number of idle processes;
+;   active processes     - the number of active processes;
+;   total processes      - the number of idle + active processes;
+;   max active processes - the maximum number of active processes since FPM
+;                          has started;
+;   max children reached - number of times, the process limit has been reached,
+;                          when pm tries to start more children (works only for
+;                          pm 'dynamic' and 'ondemand');
+; Value are updated in real time.
+; Example output:
+;   pool:                 www
+;   process manager:      static
+;   start time:           01/Jul/2011:17:53:49 +0200
+;   start since:          62636
+;   accepted conn:        190460
+;   listen queue:         0
+;   max listen queue:     1
+;   listen queue len:     42
+;   idle processes:       4
+;   active processes:     11
+;   total processes:      15
+;   max active processes: 12
+;   max children reached: 0
+;
+; By default the status page output is formatted as text/plain. Passing either
+; 'html', 'xml' or 'json' in the query string will return the corresponding
+; output syntax. Example:
+;   http://www.foo.bar/status
+;   http://www.foo.bar/status?json
+;   http://www.foo.bar/status?html
+;   http://www.foo.bar/status?xml
+;
+; By default the status page only outputs short status. Passing 'full' in the
+; query string will also return status for each pool process.
+; Example: 
+;   http://www.foo.bar/status?full
+;   http://www.foo.bar/status?json&full
+;   http://www.foo.bar/status?html&full
+;   http://www.foo.bar/status?xml&full
+; The Full status returns for each process:
+;   pid                  - the PID of the process;
+;   state                - the state of the process (Idle, Running, ...);
+;   start time           - the date and time the process has started;
+;   start since          - the number of seconds since the process has started;
+;   requests             - the number of requests the process has served;
+;   request duration     - the duration in µs of the requests;
+;   request method       - the request method (GET, POST, ...);
+;   request URI          - the request URI with the query string;
+;   content length       - the content length of the request (only with POST);
+;   user                 - the user (PHP_AUTH_USER) (or '-' if not set);
+;   script               - the main script called (or '-' if not set);
+;   last request cpu     - the %cpu the last request consumed
+;                          it's always 0 if the process is not in Idle state
+;                          because CPU calculation is done when the request
+;                          processing has terminated;
+;   last request memory  - the max amount of memory the last request consumed
+;                          it's always 0 if the process is not in Idle state
+;                          because memory calculation is done when the request
+;                          processing has terminated;
+; If the process is in Idle state, then informations are related to the
+; last request the process has served. Otherwise informations are related to
+; the current request being served.
+; Example output:
+;   ************************
+;   pid:                  31330
+;   state:                Running
+;   start time:           01/Jul/2011:17:53:49 +0200
+;   start since:          63087
+;   requests:             12808
+;   request duration:     1250261
+;   request method:       GET
+;   request URI:          /test_mem.php?N=10000
+;   content length:       0
+;   user:                 -
+;   script:               /home/fat/web/docs/php/test_mem.php
+;   last request cpu:     0.00
+;   last request memory:  0
+;
+; Note: There is a real-time FPM status monitoring sample web page available
+;       It's available in: ${prefix}/share/fpm/status.html
+;
+; Note: The value must start with a leading slash (/). The value can be
+;       anything, but it may not be a good idea to use the .php extension or it
+;       may conflict with a real PHP file.
+; Default Value: not set
+;pm.status_path = /status
+
+; The ping URI to call the monitoring page of FPM. If this value is not set, no
+; URI will be recognized as a ping page. This could be used to test from outside
+; that FPM is alive and responding, or to
+; - create a graph of FPM availability (rrd or such);
+; - remove a server from a group if it is not responding (load balancing);
+; - trigger alerts for the operating team (24/7).
+; Note: The value must start with a leading slash (/). The value can be
+;       anything, but it may not be a good idea to use the .php extension or it
+;       may conflict with a real PHP file.
+; Default Value: not set
+;ping.path = /ping
+
+; This directive may be used to customize the response of a ping request. The
+; response is formatted as text/plain with a 200 response code.
+; Default Value: pong
+;ping.response = pong
+
+; The access log file
+; Default: not set
+;access.log = log/$pool.access.log
+
+; The access log format.
+; The following syntax is allowed
+;  %%: the '%' character
+;  %C: %CPU used by the request
+;      it can accept the following format:
+;      - %{user}C for user CPU only
+;      - %{system}C for system CPU only
+;      - %{total}C  for user + system CPU (default)
+;  %d: time taken to serve the request
+;      it can accept the following format:
+;      - %{seconds}d (default)
+;      - %{miliseconds}d
+;      - %{mili}d
+;      - %{microseconds}d
+;      - %{micro}d
+;  %e: an environment variable (same as $_ENV or $_SERVER)
+;      it must be associated with embraces to specify the name of the env
+;      variable. Some exemples:
+;      - server specifics like: %{REQUEST_METHOD}e or %{SERVER_PROTOCOL}e
+;      - HTTP headers like: %{HTTP_HOST}e or %{HTTP_USER_AGENT}e
+;  %f: script filename
+;  %l: content-length of the request (for POST request only)
+;  %m: request method
+;  %M: peak of memory allocated by PHP
+;      it can accept the following format:
+;      - %{bytes}M (default)
+;      - %{kilobytes}M
+;      - %{kilo}M
+;      - %{megabytes}M
+;      - %{mega}M
+;  %n: pool name
+;  %o: ouput header
+;      it must be associated with embraces to specify the name of the header:
+;      - %{Content-Type}o
+;      - %{X-Powered-By}o
+;      - %{Transfert-Encoding}o
+;      - ....
+;  %p: PID of the child that serviced the request
+;  %P: PID of the parent of the child that serviced the request
+;  %q: the query string 
+;  %Q: the '?' character if query string exists
+;  %r: the request URI (without the query string, see %q and %Q)
+;  %R: remote IP address
+;  %s: status (response code)
+;  %t: server time the request was received
+;      it can accept a strftime(3) format:
+;      %d/%b/%Y:%H:%M:%S %z (default)
+;  %T: time the log has been written (the request has finished)
+;      it can accept a strftime(3) format:
+;      %d/%b/%Y:%H:%M:%S %z (default)
+;  %u: remote user
+;
+; Default: "%R - %u %t \"%m %r\" %s"
+;access.format = "%R - %u %t \"%m %r%Q%q\" %s %f %{mili}d %{kilo}M %C%%"
+ 
+; The log file for slow requests
+; Default Value: not set
+; Note: slowlog is mandatory if request_slowlog_timeout is set
+slowlog = /var/log/nginx/__NAMETOCHANGE__.slow.log
+ 
+; The timeout for serving a single request after which a PHP backtrace will be
+; dumped to the 'slowlog' file. A value of '0s' means 'off'.
+; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
+; Default Value: 0
+request_slowlog_timeout = 5s
+ 
+; The timeout for serving a single request after which the worker process will
+; be killed. This option should be used when the 'max_execution_time' ini option
+; does not stop script execution for some reason. A value of '0' means 'off'.
+; Available units: s(econds)(default), m(inutes), h(ours), or d(ays)
+; Default Value: 0
+request_terminate_timeout = 1d
+ 
+; Set open file descriptor rlimit.
+; Default Value: system defined value
+;rlimit_files = 1024
+ 
+; Set max core size rlimit.
+; Possible Values: 'unlimited' or an integer greater or equal to 0
+; Default Value: system defined value
+;rlimit_core = 0
+ 
+; Chroot to this directory at the start. This value must be defined as an
+; absolute path. When this value is not set, chroot is not used.
+; Note: you can prefix with '$prefix' to chroot to the pool prefix or one
+; of its subdirectories. If the pool prefix is not set, the global prefix
+; will be used instead.
+; Note: chrooting is a great security feature and should be used whenever 
+;       possible. However, all PHP paths will be relative to the chroot
+;       (error_log, sessions.save_path, ...).
+; Default Value: not set
+;chroot =
+
+; Chdir to this directory at the start.
+; Note: relative path can be used.
+; Default Value: current directory or / when chroot
+chdir = __FINALPATH__
+
+; Redirect worker stdout and stderr into main error log. If not set, stdout and
+; stderr will be redirected to /dev/null according to FastCGI specs.
+; Note: on highloaded environement, this can cause some delay in the page
+; process time (several ms).
+; Default Value: no
+catch_workers_output = yes
+
+; Limits the extensions of the main script FPM will allow to parse. This can
+; prevent configuration mistakes on the web server side. You should only limit
+; FPM to .php extensions to prevent malicious users to use other extensions to
+; exectute php code.
+; Note: set an empty value to allow all extensions.
+; Default Value: .php
+;security.limit_extensions = .php .php3 .php4 .php5
+ 
+; Pass environment variables like LD_LIBRARY_PATH. All $VARIABLEs are taken from
+; the current environment.
+; Default Value: clean env
+;env[HOSTNAME] = $HOSTNAME
+;env[PATH] = /usr/local/bin:/usr/bin:/bin
+;env[TMP] = /tmp
+;env[TMPDIR] = /tmp
+;env[TEMP] = /tmp
+
+; Additional php.ini defines, specific to this pool of workers. These settings
+; overwrite the values previously defined in the php.ini. The directives are the
+; same as the PHP SAPI:
+;   php_value/php_flag             - you can set classic ini defines which can
+;                                    be overwritten from PHP call 'ini_set'. 
+;   php_admin_value/php_admin_flag - these directives won't be overwritten by
+;                                     PHP call 'ini_set'
+; For php_*flag, valid values are on, off, 1, 0, true, false, yes or no.
+
+; Defining 'extension' will load the corresponding shared extension from
+; extension_dir. Defining 'disable_functions' or 'disable_classes' will not
+; overwrite previously defined php.ini values, but will append the new value
+; instead.
+
+; Note: path INI options can be relative and will be expanded with the prefix
+; (pool, global or /usr)
+
+; Default Value: nothing is defined by default except the values in php.ini and
+;                specified at startup with the -d argument
+;php_admin_value[sendmail_path] = /usr/sbin/sendmail -t -i -f www@my.domain.com
+;php_flag[display_errors] = off
+;php_admin_value[error_log] = /var/log/fpm-php.www.log
+;php_admin_flag[log_errors] = on
+;php_admin_value[memory_limit] = 32M
diff --git a/conf/php-fpm.ini b/conf/php-fpm.ini
new file mode 100644
index 0000000..5c27d59
--- /dev/null
+++ b/conf/php-fpm.ini
@@ -0,0 +1,10 @@
+; Common values to change to increase file upload limit
+; upload_max_filesize = 50M
+; post_max_size = 50M
+; mail.add_x_header = Off
+
+; Other common parameters
+; max_execution_time = 600
+; max_input_time = 300
+; memory_limit = 256M
+; short_open_tag = On
diff --git a/manifest.json b/manifest.json
index e67371b..9e680a5 100644
--- a/manifest.json
+++ b/manifest.json
@@ -61,14 +61,6 @@
                 },
                 "example": "admin@example.com"
             },
-            {
-                "name": "password",
-                "type": "password",
-                "ask": {
-                    "en": "Password for the admin account (At least 6 characters long)"
-                },
-                "example": "admin@example.com"
-            },
             {
                 "name": "is_public",
                 "type": "boolean",
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 0f53f77..9fd3604 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -1,112 +1,71 @@
 #!/bin/bash
 
-# =============================================================================
-#                     YUNOHOST 2.7 FORTHCOMING HELPERS
-# =============================================================================
-
-# Create a dedicated nginx config
+# ============= FUTURE YUNOHOST HELPER =============
+# Delete a file checksum from the app settings
 #
-# usage: ynh_add_nginx_config
-ynh_add_nginx_config () {
-	finalnginxconf="/etc/nginx/conf.d/$domain.d/$app.conf"
-	ynh_backup_if_checksum_is_different "$finalnginxconf"
-	sudo cp ../conf/nginx.conf "$finalnginxconf"
-
-	# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
-	# Substitute in a nginx config file only if the variable is not empty
-	if test -n "${path_url:-}"; then
-		ynh_replace_string "__PATH__" "$path_url" "$finalnginxconf"
-	fi
-	if test -n "${domain:-}"; then
-		ynh_replace_string "__DOMAIN__" "$domain" "$finalnginxconf"
-	fi
-	if test -n "${port:-}"; then
-		ynh_replace_string "__PORT__" "$port" "$finalnginxconf"
-	fi
-	if test -n "${app:-}"; then
-		ynh_replace_string "__NAME__" "$app" "$finalnginxconf"
-	fi
-	if test -n "${final_path:-}"; then
-		ynh_replace_string "__FINALPATH__" "$final_path" "$finalnginxconf"
-	fi
-	ynh_store_file_checksum "$finalnginxconf"
-
-	sudo systemctl reload nginx
+# $app should be defined when calling this helper
+#
+# usage: ynh_remove_file_checksum file
+# | arg: file - The file for which the checksum will be deleted
+ynh_delete_file_checksum () {
+	local checksum_setting_name=checksum_${1//[\/ ]/_}	# Replace all '/' and ' ' by '_'
+	ynh_app_setting_delete $app $checksum_setting_name
 }
 
-# Remove the dedicated nginx config
-#
-# usage: ynh_remove_nginx_config
-ynh_remove_nginx_config () {
-	ynh_secure_remove "/etc/nginx/conf.d/$domain.d/$app.conf"
-	sudo systemctl reload nginx
-}
 
-# Create a dedicated php-fpm config
+# Send an email to inform the administrator
 #
-# usage: ynh_add_fpm_config
-ynh_add_fpm_config () {
-	finalphpconf="/etc/php5/fpm/pool.d/$app.conf"
-	ynh_backup_if_checksum_is_different "$finalphpconf"
-	sudo cp ../conf/php-fpm.conf "$finalphpconf"
-	ynh_replace_string "__NAMETOCHANGE__" "$app" "$finalphpconf"
-	ynh_replace_string "__FINALPATH__" "$final_path" "$finalphpconf"
-	ynh_replace_string "__USER__" "$app" "$finalphpconf"
-	sudo chown root: "$finalphpconf"
-	ynh_store_file_checksum "$finalphpconf"
+# usage: ynh_send_readme_to_admin app_message [recipients]
+# | arg: app_message - The message to send to the administrator.
+# | arg: recipients - The recipients of this email. Use spaces to separate multiples recipients. - default: root
+#	example: "root admin@domain"
+#	If you give the name of a YunoHost user, ynh_send_readme_to_admin will find its email adress for you
+#	example: "root admin@domain user1 user2"
+ynh_send_readme_to_admin() {
+	local app_message="${1:-...No specific information...}"
+	local recipients="${2:-root}"
 
-	if [ -e "../conf/php-fpm.ini" ]
+	# Retrieve the email of users
+	find_mails () {
+		local list_mails="$1"
+		local mail
+		local recipients=" "
+		# Read each mail in argument
+		for mail in $list_mails
+		do
+			# Keep root or a real email address as it is
+			if [ "$mail" = "root" ] || echo "$mail" | grep --quiet "@"
+			then
+				recipients="$recipients $mail"
+			else
+				# But replace an user name without a domain after by its email
+				if mail=$(ynh_user_get_info "$mail" "mail" 2> /dev/null)
+				then
+					recipients="$recipients $mail"
+				fi
+			fi
+		done
+		echo "$recipients"
+	}
+	recipients=$(find_mails "$recipients")
+
+	local mail_subject="☁️🆈🅽🅷☁️: \`$app\` has important message for you"
+
+	local mail_message="This is an automated message from your beloved YunoHost server.
+Specific information for the application $app.
+$app_message
+---
+Automatic diagnosis data from YunoHost
+$(yunohost tools diagnosis | grep -B 100 "services:" | sed '/services:/d')"
+	
+	# Define binary to use for mail command
+	if [ -e /usr/bin/bsd-mailx ]
 	then
-		finalphpini="/etc/php5/fpm/conf.d/20-$app.ini"
-		ynh_backup_if_checksum_is_different "$finalphpini"
-		sudo cp ../conf/php-fpm.ini "$finalphpini"
-		sudo chown root: "$finalphpini"
-		ynh_store_file_checksum "$finalphpini"
+		local mail_bin=/usr/bin/bsd-mailx
+	else
+		local mail_bin=/usr/bin/mail.mailutils
 	fi
 
-	sudo systemctl reload php5-fpm
-}
-
-# Remove the dedicated php-fpm config
-#
-# usage: ynh_remove_fpm_config
-ynh_remove_fpm_config () {
-	ynh_secure_remove "/etc/php5/fpm/pool.d/$app.conf"
-	ynh_secure_remove "/etc/php5/fpm/conf.d/20-$app.ini" 2>&1
-	sudo systemctl reload php5-fpm
-}
-
-# Create a dedicated systemd config
-#
-# usage: ynh_add_systemd_config
-ynh_add_systemd_config () {
-	finalsystemdconf="/etc/systemd/system/$app.service"
-	ynh_backup_if_checksum_is_different "$finalsystemdconf"
-	sudo cp ../conf/systemd.service "$finalsystemdconf"
-
-	# To avoid a break by set -u, use a void substitution ${var:-}. If the variable is not set, it's simply set with an empty variable.
-	# Substitute in a nginx config file only if the variable is not empty
-	if test -n "${final_path:-}"; then
-		ynh_replace_string "__FINALPATH__" "$final_path" "$finalsystemdconf"
-	fi
-	if test -n "${app:-}"; then
-		ynh_replace_string "__APP__" "$app" "$finalsystemdconf"
-	fi
-	ynh_store_file_checksum "$finalsystemdconf"
-
-	sudo chown root: "$finalsystemdconf"
-	sudo systemctl enable $app
-	sudo systemctl daemon-reload
-}
-
-# Remove the dedicated systemd config
-#
-# usage: ynh_remove_systemd_config
-ynh_remove_systemd_config () {
-	finalsystemdconf="/etc/systemd/system/$app.service"
-	if [ -e "$finalsystemdconf" ]; then
-		sudo systemctl stop $app
-		sudo systemctl disable $app
-		ynh_secure_remove "$finalsystemdconf"
-	fi
+	# Send the email to the recipients
+	echo "$mail_message" | $mail_bin -a "Content-Type: text/plain; charset=UTF-8" -s "$mail_subject" "$recipients"
 }
diff --git a/scripts/backup b/scripts/backup
index 027a834..6ff479b 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -2,27 +2,28 @@
 
 #=================================================
 # GENERIC START
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-# Exit on command errors and treat access to unset variables as an error
-set -eu
-
-
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
 
-if [ ! -e _common.sh ]; then
-	# Get the _common.sh file if it's not in the current directory
-	cp ../settings/scripts/_common.sh ./_common.sh
-	chmod a+rx _common.sh
-fi
-source _common.sh
+source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-# See comments in install script
+#=================================================
+# MANAGE SCRIPT FAILURE
+#=================================================
+
+ynh_clean_setup () {
+	### Remove this function if there's nothing to clean before calling the remove script.
+	true
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# LOAD SETTINGS
+#=================================================
+
 app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get $app final_path)
@@ -36,13 +37,20 @@ db_pwd=$(ynh_app_setting_get $app mysqlpwd)
 # BACKUP THE APP MAIN DIR
 #=================================================
 
-ynh_backup "$final_path" "$final_path"
+ynh_backup "$final_path" 
 
 #=================================================
 # BACKUP THE NGINX CONFIGURATION
 #=================================================
 
-ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf" "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf" 
+
+#=================================================
+# BACKUP THE PHP-FPM CONFIGURATION
+#=================================================
+
+ynh_backup "/etc/php5/fpm/pool.d/$app.conf"
+ynh_backup "/etc/php5/fpm/conf.d/20-$app.ini"
 
 #=================================================
 # BACKUP THE MYSQL DATABASE
@@ -50,9 +58,3 @@ ynh_backup "/etc/nginx/conf.d/$domain.d/$app.conf" "/etc/nginx/conf.d/$domain.d/
 
 ynh_mysql_dump_db "$db_name" > db.sql
 
-
-### PHP (remove if not used) ###
-# If a dedicated php-fpm process is used:
-# # Copy PHP-FPM pool configuration
-# ynh_backup "/etc/php5/fpm/pool.d/${app}.conf" "php-fpm.conf"
-### PHP end ###
diff --git a/scripts/install b/scripts/install
index c80be0a..b58ab77 100755
--- a/scripts/install
+++ b/scripts/install
@@ -25,8 +25,6 @@ ynh_abort_if_errors
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
 
-app=$YNH_APP_INSTANCE_NAME
-
 # Retrieve arguments
 domain=$YNH_APP_ARG_DOMAIN
 path_url=$YNH_APP_ARG_PATH
@@ -34,11 +32,28 @@ is_public=$YNH_APP_ARG_IS_PUBLIC
 admin_username=$YNH_APP_ARG_USERNAME
 admin_name=$YNH_APP_ARG_NAME
 admin_email=$YNH_APP_ARG_EMAIL
-admin_password=$(openssl passwd -1 -salt xyz $YNH_APP_ARG_PASSWORD)
+password=$(ynh_string_random 24)
+admin_password=$(openssl passwd -1 -salt xyz $password)
+
+### If it's a multi-instance app, meaning it can be installed several times independently
+### The id of the app as stated in the manifest is available as $YNH_APP_ID
+### The instance number is available as $YNH_APP_INSTANCE_NUMBER (equals "1", "2", ...)
+### The app instance name is available as $YNH_APP_INSTANCE_NAME
+###    - the first time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample
+###    - the second time the app is installed, YNH_APP_INSTANCE_NAME = ynhexample__2
+###    - ynhexample__{N} for the subsequent installations, with N=3,4, ...
+### The app instance name is probably what interests you most, since this is
+### guaranteed to be unique. This is a good unique identifier to define installation path,
+### db names, ...
+app=$YNH_APP_INSTANCE_NAME
 
 #=================================================
 # CHECK IF THE APP CAN BE INSTALLED WITH THESE ARGS
 #=================================================
+### If the app uses nginx as web server (written in HTML/PHP in most cases), the final path should be "/var/www/$app".
+### If the app provides an internal web server (or uses another application server such as uwsgi), the final path should be "/opt/yunohost/$app"
+final_path=/var/www/$app
+test ! -e "$final_path" || ynh_die "This path already contains a folder"
 
 # Normalize the url path syntax
 path_url=$(ynh_normalize_url_path $path_url)
@@ -48,80 +63,131 @@ ynh_webpath_available $domain $path_url
 # Register (book) web path
 ynh_webpath_register $app $domain $path_url
 
-final_path=/var/www/$app
-test ! -e "$final_path" || ynh_die "This path already contains a folder"
-
-
-# Save app settings
-ynh_app_setting_set "$app" is_public "$is_public"
+#=================================================
+# STORE SETTINGS FROM MANIFEST
+#=================================================
+ynh_app_setting_set $app is_public $is_public
 ynh_app_setting_set $app domain $domain
 ynh_app_setting_set $app path $path_url
 
 
-# Check password strength
-[[ ${#admin_password} -gt 6 ]] || ynh_die \
-"The password is too weak, it must be longer than 6 characters"
-
-
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
 #=================================================
 
+### `ynh_setup_source` is used to install an app from a zip or tar.gz file,
+### downloaded from an upstream source, like a git repository.
+### `ynh_setup_source` use the file conf/app.src
+
 ynh_app_setting_set $app final_path $final_path
 # Download, check integrity, uncompress and patch the source from app.src
 ynh_setup_source "$final_path"
-# Set permissions to app files
-# you may need to make some file and/or directory writeable by www-data (nginx user)
-sudo chown -R root: $final_path
-
 
 #=================================================
 # CREATE A MYSQL DATABASE
 #=================================================
-# If your app uses a MySQL database, you can use these lines to bootstrap
-# a database, an associated user and save the password in app settings
+
+### Use these lines if you need a database for the application.
+### `ynh_mysql_setup_db` will create a database, an associated user and a ramdom password.
+### The password will be stored as 'mysqlpwd' into the app settings,
+### and will be available as $db_pwd
+### If you're not using these lines:
+###		- Remove the section "BACKUP THE MYSQL DATABASE" in the backup script
+###		- Remove also the section "REMOVE THE MYSQL DATABASE" in the remove script
+###		- As well as the section "RESTORE THE MYSQL DATABASE" in the restore script
 
 db_name=$(ynh_sanitize_dbid $app)
 ynh_app_setting_set $app db_name $db_name
 ynh_mysql_setup_db $db_name $db_name
 
 # Adding the details of the database to the config file
-sed -i "s@__dbuser__@$db_name@g" ../conf/config.ini.php
-sed -i "s@__dbpass__@$db_pwd@g" ../conf/config.ini.php
-sed -i "s@__dbname__@$db_name@g" ../conf/config.ini.php
+ynh_replace_string "__dbuser__" "$db_name@g"  "../conf/config.ini.php"
+ynh_replace_string "__dbpass__" "$db_pwd@g"   "../conf/config.ini.php"
+ynh_replace_string "__dbname__" "$db_name@g"  "../conf/config.ini.php"
 
 # Copy the config file to the final path
 sudo cp ../conf/config.ini.php $final_path/data/.
 
-
-
-# # Load initial SQL into the new database
+# Load initial SQL into the new database
 ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_name" < "../conf/sql/webtrees.sql"
 
-
-
 # Replace variables in sql scripts
-ynh_replace_string "__USER_NAME__" "$admin_username" ../conf/sql/admin.sql
-ynh_replace_string "__NAME__" "$admin_name" ../conf/sql/admin.sql
-ynh_replace_string "__USER_EMAIL__" "$admin_email" ../conf/sql/admin.sql
-ynh_replace_string "__PASSWORD__" "$admin_password" ../conf/sql/admin.sql
+ynh_replace_string "__USER_NAME__"  "$admin_username" "../conf/sql/admin.sql"
+ynh_replace_string "__NAME__"       "$admin_name"     "../conf/sql/admin.sql"
+ynh_replace_string "__USER_EMAIL__" "$admin_email"    "../conf/sql/admin.sql"
+ynh_replace_string "__PASSWORD__"   "$admin_password" "../conf/sql/admin.sql"
 
 ynh_mysql_connect_as "$db_name" "$db_pwd" "$db_name" < "../conf/sql/admin.sql"
 
-### MySQL end ###
+#=================================================
+# NGINX CONFIGURATION
+#=================================================
+
+### `ynh_add_nginx_config` will use the file conf/nginx.conf
 
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
 
+# Create a system user
+ynh_system_user_create $app
 
-# If app is public, add url to SSOWat conf as skipped_uris
-if [[ $is_public -eq 1 ]]; then
-  # unprotected_uris allows SSO credentials to be passed anyway.
-  ynh_app_setting_set "$app" unprotected_uris "/"
-fi
+#=================================================
+# PHP-FPM CONFIGURATION
+#=================================================
 
+### `ynh_add_fpm_config` is used to set up a PHP config.
+### You can remove it if your app doesn't use PHP.
+### `ynh_add_fpm_config` will use the files conf/php-fpm.conf and conf/php-fpm.ini
+### If you're not using these lines:
+###		- You can remove these files in conf/.
+###		- Remove the section "BACKUP THE PHP-FPM CONFIGURATION" in the backup script
+###		- Remove also the section "REMOVE PHP-FPM CONFIGURATION" in the remove script
+###		- As well as the section "RESTORE THE PHP-FPM CONFIGURATION" in the restore script
+###		With the reload at the end of the script.
+###		- And the section "PHP-FPM CONFIGURATION" in the upgrade script
+
+# Create a dedicated php-fpm config
+ynh_add_fpm_config
+
+#=================================================
+# SET RIGHT PERMISSION FOR APP
+#=================================================
+
+chown -R $app: $final_path
 sudo chmod -R 777 $final_path/data
 
-# Reload services
-sudo service nginx reload
+#=================================================
+# SETUP SSOWAT
+#=================================================
+
+# Make app public if necessary
+if [ $is_public -eq 1 ]
+then
+	# unprotected_uris allows SSO credentials to be passed anyway.
+	ynh_app_setting_set $app unprotected_uris "/"
+fi
+
+#=================================================
+# RELOAD NGINX
+#=================================================
+
+systemctl reload nginx
+
+#=================================================
+# SEND A README FOR THE ADMIN
+#=================================================
+
+message=" $app was successfully installed :)
+
+Please open https://$domain$path_url
+
+The admin username is: $admin_username
+And the admin password is: $password
+
+If you facing an issue or want to improve this app, please open a new issue in this project: https://github.com/YunoHost-Apps/Webtrees_ynh"
+
+ynh_send_readme_to_admin "$message"
diff --git a/scripts/remove b/scripts/remove
index 5f0bba9..079c230 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -12,15 +12,21 @@ source /usr/share/yunohost/helpers
 #=================================================
 # LOAD SETTINGS
 #=================================================
+
 app=$YNH_APP_INSTANCE_NAME
 
 # Retrieve app settings
 domain=$(ynh_app_setting_get "$app" domain)
 db_name=$(ynh_app_setting_get $app db_name)
+db_user=$db_name
+final_path=$(ynh_app_setting_get $app final_path)
 
+#=================================================
+# REMOVE APP MAIN DIR
+#=================================================
 
 # Remove the app directory securely
-ynh_secure_remove "/var/www/$app"
+ynh_secure_remove "$final_path"
 
 #=================================================
 # REMOVE NGINX CONFIGURATION
@@ -29,12 +35,16 @@ ynh_secure_remove "/var/www/$app"
 # Remove the dedicated nginx config
 ynh_remove_nginx_config
 
+#=================================================
+# REMOVE PHP-FPM CONFIGURATION
+#=================================================
 
-### PHP (remove if not used) ###
-# If a dedicated php-fpm process is used:
-# sudo rm -f /etc/php5/fpm/pool.d/$app.conf
-# sudo service php5-fpm reload
-### PHP end ###
+# Remove the dedicated php-fpm config
+ynh_remove_fpm_config
+
+#=================================================
+# REMOVE THE MYSQL DATABASE
+#=================================================
 
 # Remove a database if it exists, along with the associated user
-ynh_mysql_remove_db $db_name $db_name
+ynh_mysql_remove_db $db_user $db_name
diff --git a/scripts/restore b/scripts/restore
index 93071f0..10f84a5 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -2,28 +2,29 @@
 
 #=================================================
 # GENERIC START
-#=================================================
-# MANAGE SCRIPT FAILURE
-#=================================================
-
-# Exit on command errors and treat access to unset variables as an error
-set -eu
-
 #=================================================
 # IMPORT GENERIC HELPERS
 #=================================================
 
-if [ ! -e _common.sh ]; then
-	# Get the _common.sh file if it's not in the current directory
-	cp ../settings/scripts/_common.sh ./_common.sh
-	chmod a+rx _common.sh
-fi
-source _common.sh
+source ../settings/scripts/_common.sh
 source /usr/share/yunohost/helpers
 
-# See comsudo yunohost app ssowatconfments in install script
-app=$YNH_APP_INSTANCE_NAME
+#=================================================
+# MANAGE SCRIPT FAILURE
+#=================================================
 
+ynh_clean_setup () {
+	#### Remove this function if there's nothing to clean before calling the remove script.
+	true
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
+#=================================================
+# LOAD SETTINGS
+#=================================================
+
+app=$YNH_APP_INSTANCE_NAME
 
 # Retrieve old app settings
 domain=$(ynh_app_setting_get "$app" domain)
@@ -35,29 +36,40 @@ db_name=$(ynh_app_setting_get $app db_name)
 # CHECK IF THE APP CAN BE RESTORED
 #=================================================
 
-yunohost app checkurl "${domain}${path_url}" -a "$app" \
+ynh_webpath_available $domain $path_url \
 	|| ynh_die "Path not available: ${domain}${path_url}"
 test ! -d $final_path \
 	|| ynh_die "There is already a directory: $final_path "
 
-  #=================================================
-  # STANDARD RESTORATION STEPS
-  #=================================================
-  # RESTORE THE NGINX CONFIGURATION
-  #=================================================
+#=================================================
+# STANDARD RESTORATION STEPS
+#=================================================
+# RESTORE THE NGINX CONFIGURATION
+#=================================================
 
-  ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
+ynh_restore_file "/etc/nginx/conf.d/$domain.d/$app.conf"
 
-  #=================================================
-  # RESTORE THE APP MAIN DIR
-  #=================================================
+#=================================================
+# RESTORE THE APP MAIN DIR
+#=================================================
 
-  ynh_restore_file "$final_path"
+ynh_restore_file "$final_path"
+
+#=================================================
+# RECREATE THE DEDICATED USER
+#=================================================
+
+# Create the dedicated user (if not existing)
+ynh_system_user_create $app
+
+#=================================================
+# RESTORE USER RIGHTS
+#=================================================
 
 # Restore permissions to app files
-# you may need to make some file and/or directory writeable by www-data (nginx user)
-sudo chown -R root: "${final_path}"
 
+sudo chown -R $app: "${final_path}"
+sudo chmod -R 777 $final_path/data
 
 #=================================================
 # RESTORE THE MYSQL DATABASE
@@ -66,16 +78,19 @@ sudo chown -R root: "${final_path}"
 db_pwd=$(ynh_app_setting_get $app mysqlpwd)
 ynh_mysql_setup_db $db_name $db_name $db_pwd
 ynh_mysql_connect_as $db_name $db_pwd $db_name < ./db.sql
-### PHP (remove if not used) ###
-# If a dedicated php-fpm process is used:
-# # Copy PHP-FPM pool configuration and reload the service
-# sudo cp -a ./php-fpm.conf "/etc/php5/fpm/pool.d/${app}.conf"
-# sudo service php5-fpm reload
-### PHP end ###
 
+#=================================================
+# RESTORE THE PHP-FPM CONFIGURATION
+#=================================================
 
-sudo chmod -R 777 $final_path/data
+ynh_restore_file "/etc/php5/fpm/pool.d/$app.conf"
+ynh_restore_file "/etc/php5/fpm/conf.d/20-$app.ini"
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# RELOAD NGINX AND PHP-FPM
+#=================================================
 
-# Restart webserver
 systemctl reload php5-fpm
-sudo service nginx reload
+systemctl reload nginx
diff --git a/scripts/upgrade b/scripts/upgrade
index 0e9902b..5ca5354 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -12,7 +12,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 # LOAD SETTINGS
 #=================================================
-# See comments in install script
+
 app=$YNH_APP_INSTANCE_NAME
 
 
@@ -20,25 +20,46 @@ app=$YNH_APP_INSTANCE_NAME
 domain=$(ynh_app_setting_get "$app" domain)
 path_url=$(ynh_app_setting_get "$app" path)
 is_public=$(ynh_app_setting_get "$app" is_public)
-
+final_path=$(ynh_app_setting_get $app final_path)
 
 #=================================================
 # ENSURE DOWNWARD COMPATIBILITY
 #=================================================
 
+# Fix is_public as a boolean value
 if [ "$is_public" = "Yes" ]; then
-	ynh_app_setting_set $app is_public 1	# Fix is_public as a boolean value
+	ynh_app_setting_set $app is_public 1
 	is_public=1
 elif [ "$is_public" = "No" ]; then
 	ynh_app_setting_set $app is_public 0
 	is_public=0
 fi
 
-if [ -z $db_name ]; then	# If db_name doesn't exist, create it
+# If db_name doesn't exist, create it
+if [ -z $db_name ]; then
 	db_name=$(ynh_sanitize_dbid $app)
 	ynh_app_setting_set $app db_name $db_name
 fi
 
+# If final_path doesn't exist, create it
+if [ -z $final_path ]; then
+	final_path=/var/www/$app
+	ynh_app_setting_set $app final_path $final_path
+fi
+
+#=================================================
+# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+#=================================================
+
+# Backup the current version of the app
+ynh_backup_before_upgrade
+ynh_clean_setup () {
+	# restore it if the upgrade fails
+	ynh_restore_upgradebackup
+}
+# Exit if an error occurs during the execution of the script
+ynh_abort_if_errors
+
 #=================================================
 # CHECK THE PATH
 #=================================================
@@ -46,8 +67,6 @@ fi
 # Normalize the URL path syntax
 path_url=$(ynh_normalize_url_path $path_url)
 
-final_path=/var/www/$app
-
 # Move old app dir
 sudo mv ${final_path} ${final_path}.old
 
@@ -60,35 +79,37 @@ sudo cp -a ${final_path}.old/data ${final_path}
 # delete temp directory
 sudo rm -Rf ${final_path}.old
 
-
-# Set permissions to app files
-# you may need to make some file and/or directory writeable by www-data (nginx user)
-sudo chown -R root: $final_path
-
 # Create a dedicated nginx config
 ynh_add_nginx_config
 
+#=================================================
+# CREATE DEDICATED USER
+#=================================================
 
-### PHP (remove if not used) ###
-# If a dedicated php-fpm process is used:
-# # Modify PHP-FPM pool configuration and copy it to the pool directory
-# sed -i "s@YNH_WWW_APP@$app@g" ../conf/php-fpm.conf
-# sed -i "s@YNH_WWW_ALIAS@$final_path/@g" ../conf/php-fpm.conf
-# finalphpconf=/etc/php5/fpm/pool.d/$app.conf
-# sudo cp ../conf/php-fpm.conf $finalphpconf
-# sudo chown root: $finalphpconf
-# sudo chmod 644 $finalphpconf
-# sudo service php5-fpm restart
-### PHP end ###
+# Create a dedicated user (if not existing)
+ynh_system_user_create $app
+
+#=================================================
+# PHP-FPM CONFIGURATION
+#=================================================
+
+# Create a dedicated php-fpm config
+ynh_add_fpm_config
+
+#=================================================
+# GENERIC FINALIZATION
+#=================================================
+# SECURE FILES AND DIRECTORIES
+#=================================================
+
+# Set permissions on app files
+chown -R $app: $final_path
+sudo chmod -R 777 $final_path/data
 
 #=================================================
 # SETUP SSOWAT
 #=================================================
 
-if [ $is_public -eq 0 ]
-then	# Remove the public access
-	ynh_app_setting_delete $app skipped_uris
-fi
 # Make app public if necessary
 if [ $is_public -eq 1 ]
 then
@@ -96,8 +117,6 @@ then
 	ynh_app_setting_set $app unprotected_uris "/"
 fi
 
-
-sudo chmod -R 777 $final_path/data
 #=================================================
 # RELOAD NGINX
 #=================================================