diff --git a/check_process b/check_process
index 7049297..c641fc2 100644
--- a/check_process
+++ b/check_process
@@ -1,13 +1,8 @@
-# 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)
-		is_public=1	(PUBLIC|public=1|private=0)
-		mapbox_token=
+		domain="domain.tld"
+		is_public=1
+		mapbox_token=""
 	; Checks
 		pkg_linter=1
 		setup_sub_dir=0
@@ -16,6 +11,7 @@
 		setup_private=1
 		setup_public=1
 		upgrade=1
+		# Version 2.3.2
 		upgrade=1	from_commit=069fc840e413e1d2cf80616498bcc052e05616a1
 		backup_restore=1
 		multi_instance=1
@@ -28,4 +24,3 @@ Notification=none
 	; commit=069fc840e413e1d2cf80616498bcc052e05616a1
 		name="Version 2.3.2"
 		manifest_arg=domain=domain.tld&is_public=1&mapbox_token=
-
diff --git a/conf/app.src b/conf/app.src
index 77272ec..cf643ad 100644
--- a/conf/app.src
+++ b/conf/app.src
@@ -3,5 +3,5 @@ SOURCE_SUM=d6fc5f1496eb698325af2844ee201db1ab55cecdbe2b4e9928e9299598ed47a8
 SOURCE_SUM_PRG=sha256sum
 SOURCE_FORMAT=tar.gz
 SOURCE_IN_SUBDIR=true
-SOURCE_FILENAME=v2.3.4.tar.gz
+SOURCE_FILENAME=v2.3.5.tar.gz
 SOURCE_EXTRACT=true
diff --git a/conf/nginx.conf b/conf/nginx.conf
index e37e88e..3ad1e97 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -7,7 +7,7 @@ location / {
   proxy_set_header  X-Forwarded-For $proxy_add_x_forwarded_for;
   proxy_set_header  X-Forwarded-Host $server_name;
   proxy_set_header  X-Forwarded-Port $server_port;
-  
+
   proxy_http_version 1.1;
   proxy_set_header Upgrade $http_upgrade;
   proxy_set_header Connection "upgrade";
diff --git a/doc/.gitkeep b/doc/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/doc/DISCLAIMER.md b/doc/DISCLAIMER.md
new file mode 100644
index 0000000..8467219
--- /dev/null
+++ b/doc/DISCLAIMER.md
@@ -0,0 +1,2 @@
+* Any known limitations, constrains or stuff not working, such as (but not limited to):
+    * not-working single-sign on or LDAP integration
diff --git a/doc/DISCLAIMER_fr.md b/doc/DISCLAIMER_fr.md
new file mode 100644
index 0000000..1128241
--- /dev/null
+++ b/doc/DISCLAIMER_fr.md
@@ -0,0 +1,2 @@
+* Toutes les limitations, contraintes ou éléments ne fonctionnant pas, tels que (mais sans s'y limiter) :
+     * authentification unique ou intégration LDAP non fonctionnelle
diff --git a/doc/screenshots/.gitkeep b/doc/screenshots/.gitkeep
new file mode 100644
index 0000000..e69de29
diff --git a/doc/screenshots/screenshot1.png b/doc/screenshots/screenshot1.png
new file mode 100644
index 0000000..3dc26c8
Binary files /dev/null and b/doc/screenshots/screenshot1.png differ
diff --git a/manifest.json b/manifest.json
index 35ce0b0..8379dd4 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,6 +8,13 @@
     },
     "version": "2.3.5~ynh1",
     "url": "https://photoview.github.io/",
+    "upstream": {
+        "license": "AGPL-3.0-only",
+        "website": "https://photoview.github.io/",
+        "demo": "https://photos.qpqp.dk/",
+        "admindoc": "https://photoview.github.io/docs/",
+        "code": "https://github.com/photoview/photoview"
+    },
     "license": "AGPL-3.0-only",
     "maintainer": {
         "name": "Jules Bertholet",
diff --git a/scripts/backup b/scripts/backup
index 90b2e5e..8a1d93f 100755
--- a/scripts/backup
+++ b/scripts/backup
@@ -28,9 +28,9 @@ ynh_print_info --message="Loading installation settings..."
 app=$YNH_APP_INSTANCE_NAME
 
 final_path=$(ynh_app_setting_get --app=$app --key=final_path)
-data_path=$(ynh_app_setting_get --app=$app --key=data_path)
 domain=$(ynh_app_setting_get --app=$app --key=domain)
 db_name=$(ynh_app_setting_get --app=$app --key=db_name)
+data_path=$(ynh_app_setting_get --app=$app --key=data_path)
 
 #=================================================
 # DECLARE DATA AND CONF FILES TO BACKUP
@@ -69,12 +69,6 @@ ynh_backup --src_path="/etc/logrotate.d/$app"
 
 ynh_backup --src_path="/etc/systemd/system/$app.service"
 
-#=================================================
-# BACKUP VARIOUS FILES
-#=================================================
-
-ynh_backup --src_path="/var/log/$app"
-
 #=================================================
 # BACKUP THE MYSQL DATABASE
 #=================================================
diff --git a/scripts/change_url b/scripts/change_url
index 70064a4..9c79e35 100644
--- a/scripts/change_url
+++ b/scripts/change_url
@@ -40,7 +40,7 @@ data_path=$(ynh_app_setting_get --app=$app --key=data_path)
 mapbox_token=$(ynh_app_setting_get --app=$app --key=mapbox_token)
 
 #=================================================
-# BACKUP BEFORE UPGRADE THEN ACTIVE TRAP
+# BACKUP BEFORE CHANGE URL THEN ACTIVE TRAP
 #=================================================
 ynh_script_progression --message="Backing up the app before changing its URL (may take a while)..." --weight=35
 
@@ -97,11 +97,14 @@ fi
 #=================================================
 # SPECIFIC MODIFICATIONS
 #=================================================
-# ADD A CONFIGURATION
+# UPDATE A CONFIG FILE
 #=================================================
+ynh_script_progression --message="Updating a configuration file..."
 
 ynh_add_config --template=".env" --destination="$final_path/output/.env"
 
+set_permissions
+
 #=================================================
 # GENERIC FINALISATION
 #=================================================
@@ -109,6 +112,7 @@ ynh_add_config --template=".env" --destination="$final_path/output/.env"
 #=================================================
 ynh_script_progression --message="Starting a systemd service..." --weight=1
 
+# Start a systemd service
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
 #=================================================
diff --git a/scripts/install b/scripts/install
index be972c9..33dd479 100755
--- a/scripts/install
+++ b/scripts/install
@@ -56,7 +56,7 @@ ynh_app_setting_set --app=$app --key=mapbox_token --value=$mapbox_token
 #=================================================
 # STANDARD MODIFICATIONS
 #=================================================
-# FIND PORTS
+# FIND AND OPEN A PORT
 #=================================================
 ynh_script_progression --message="Finding an available port..." --weight=1
 
@@ -78,7 +78,7 @@ ynh_install_extra_app_dependencies --repo="deb https://dl.yarnpkg.com/debian/ st
 ynh_script_progression --message="Configuring system user..." --weight=1
 
 # Create a system user
-ynh_system_user_create --username=$app --home_dir="$final_path"
+ynh_system_user_create --username=$app --home_dir=$final_path
 
 #=================================================
 # CREATE A MYSQL DATABASE
@@ -131,21 +131,22 @@ ynh_script_progression --message="Building static UI files..." --weight=45
 
 build_ui
 
+#=================================================
+# ADD A CONFIGURATION
+#=================================================
+ynh_script_progression --message="Adding a configuration file..."
+
+ynh_add_config --template=".env" --destination="$final_path/output/.env"
+
+set_permissions
+
 #=================================================
 # SETUP SYSTEMD
 #=================================================
 ynh_script_progression --message="Configuring a systemd service..." --weight=1
 
 # Create a dedicated systemd config
-ynh_add_systemd_config --service=$app
-
-#=================================================
-# ADD A CONFIGURATION
-#=================================================
-
-ynh_add_config --template=".env" --destination="$final_path/output/.env"
-
-set_permissions
+ynh_add_systemd_config
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/remove b/scripts/remove
index f023cca..626f0ca 100755
--- a/scripts/remove
+++ b/scripts/remove
@@ -44,6 +44,14 @@ ynh_script_progression --message="Stopping and removing the systemd service..."
 # Remove the dedicated systemd config
 ynh_remove_systemd_config
 
+#=================================================
+# REMOVE LOGROTATE CONFIGURATION
+#=================================================
+ynh_script_progression --message="Removing logrotate configuration..." --weight=1
+
+# Remove the app-specific logrotate config
+ynh_remove_logrotate
+
 #=================================================
 # REMOVE THE MYSQL DATABASE
 #=================================================
@@ -58,6 +66,8 @@ ynh_mysql_remove_db --db_user=$db_user --db_name=$db_name
 ynh_script_progression --message="Removing dependencies..." --weight=5
 
 # Remove metapackage and its dependencies
+ynh_remove_go
+ynh_remove_nodejs
 ynh_remove_app_dependencies
 
 #=================================================
@@ -68,14 +78,6 @@ ynh_script_progression --message="Removing app main directory..." --weight=1
 # Remove the app directory securely
 ynh_secure_remove --file="$final_path"
 
-#=================================================
-# REMOVE APP DATA DIR
-#=================================================
-ynh_script_progression --message="Removing app data directory..." --weight=1
-
-# Remove the app directory securely
-ynh_secure_remove --file="$data_path"
-
 #=================================================
 # REMOVE NGINX CONFIGURATION
 #=================================================
@@ -84,36 +86,23 @@ ynh_script_progression --message="Removing NGINX web server configuration..." --
 # Remove the dedicated NGINX config
 ynh_remove_nginx_config
 
-#=================================================
-# REMOVE LOGROTATE CONFIGURATION
-#=================================================
-ynh_script_progression --message="Removing logrotate configuration..." --weight=1
-
-# Remove the app-specific logrotate config
-ynh_remove_logrotate
-
 #=================================================
 # SPECIFIC REMOVE
 #=================================================
 # REMOVE VARIOUS FILES
 #=================================================
+ynh_script_progression --message="Removing various files..."
 
 # Remove the log files
 ynh_secure_remove --file="/var/log/$app"
 
 #=================================================
-# REMOVE GO
+# REMOVE APP DATA DIR
 #=================================================
-ynh_script_progression --message="Removing Go..." --weight=1
+ynh_script_progression --message="Removing app data directory..." --weight=1
 
-ynh_remove_go
-
-#=================================================
-# REMOVE NODE
-#=================================================
-ynh_script_progression --message="Removing Node.js..." --weight=1
-
-ynh_remove_nodejs
+# Remove the app directory securely
+ynh_secure_remove --file="$data_path"
 
 #=================================================
 # GENERIC FINALIZATION
diff --git a/scripts/restore b/scripts/restore
index bac7bb0..01dcfe0 100755
--- a/scripts/restore
+++ b/scripts/restore
@@ -52,25 +52,17 @@ test ! -d $final_path \
 #=================================================
 # RESTORE THE NGINX CONFIGURATION
 #=================================================
+ynh_script_progression --message="Restoring the NGINX web server configuration..."
 
 ynh_restore_file --origin_path="/etc/nginx/conf.d/$domain.d/$app.conf"
 
 #=================================================
 # RECREATE THE DEDICATED USER
 #=================================================
-
 ynh_script_progression --message="Recreating the dedicated system user..." --weight=1
 
 # Create the dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
-#=================================================
-# REINSTALL DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Reinstalling dependencies..." --weight=30
-
-# Define and install dependencies
-ynh_install_app_dependencies $pkg_dependencies
+ynh_system_user_create --username=$app --home_dir=$final_path
 
 #=================================================
 # RESTORE THE APP MAIN DIR
@@ -84,7 +76,6 @@ set_permissions
 #=================================================
 # RESTORE THE APP DATA DIR
 #=================================================
-
 ynh_script_progression --message="Restoring the app data directory..." --weight=1
 
 ynh_restore_file --origin_path="$data_path" --not_mandatory
@@ -93,6 +84,14 @@ set_permissions
 
 #=================================================
 # SPECIFIC RESTORATION
+#=================================================
+# REINSTALL DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Reinstalling dependencies..." --weight=30
+
+# Define and install dependencies
+ynh_install_app_dependencies $pkg_dependencies
+
 #=================================================
 # RESTORE THE MYSQL DATABASE
 #=================================================
@@ -124,6 +123,15 @@ ynh_script_progression --message="Restoring the systemd configuration..." --weig
 ynh_restore_file --origin_path="/etc/systemd/system/$app.service"
 systemctl enable $app.service --quiet
 
+#=================================================
+# RESTORE THE LOGROTATE CONFIGURATION
+#=================================================
+ynh_script_progression --message="Restoring the logrotate configuration..."
+
+ynh_restore_file --origin_path="/etc/logrotate.d/$app"
+
+set_permissions
+
 #=================================================
 # INTEGRATE SERVICE IN YUNOHOST
 #=================================================
@@ -138,20 +146,6 @@ ynh_script_progression --message="Starting a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="start" --log_path="/var/log/$app/$app.log"
 
-#=================================================
-# RESTORE VARIOUS FILES
-#=================================================
-
-ynh_restore_file --origin_path="/var/log/$app"
-
-#=================================================
-# RESTORE THE LOGROTATE CONFIGURATION
-#=================================================
-
-ynh_restore_file --origin_path="/etc/logrotate.d/$app"
-
-set_permissions
-
 #=================================================
 # GENERIC FINALIZATION
 #=================================================
diff --git a/scripts/upgrade b/scripts/upgrade
index 2f4c717..6934691 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -29,6 +29,7 @@ mapbox_token=$(ynh_app_setting_get --app=$app --key=mapbox_token)
 #=================================================
 # CHECK VERSION
 #=================================================
+ynh_script_progression --message="Checking version..."
 
 upgrade_type=$(ynh_check_app_version_changed)
 
@@ -55,20 +56,25 @@ ynh_script_progression --message="Stopping a systemd service..." --weight=1
 
 ynh_systemd_action --service_name=$app --action="stop" --log_path="/var/log/$app/$app.log"
 
+#=================================================
+# ENSURE DOWNWARD COMPATIBILITY
+#=================================================
+ynh_script_progression --message="Ensuring downward compatibility..."
+
+# Cleaning legacy permissions
+if ynh_legacy_permissions_exists; then
+	ynh_legacy_permissions_delete_all
+
+	ynh_app_setting_delete --app=$app --key=is_public
+fi
+
 #=================================================
 # CREATE DEDICATED USER
 #=================================================
 ynh_script_progression --message="Making sure dedicated system user exists..." --weight=1
 
 # Create a dedicated user (if not existing)
-ynh_system_user_create --username=$app --home_dir="$final_path"
-
-#=================================================
-# UPGRADE DEPENDENCIES
-#=================================================
-ynh_script_progression --message="Upgrading dependencies..." --weight=1
-
-ynh_install_app_dependencies $pkg_dependencies
+ynh_system_user_create --username=$app --home_dir=$final_path
 
 #=================================================
 # DOWNLOAD, CHECK AND UNPACK SOURCE
@@ -89,6 +95,13 @@ ynh_script_progression --message="Upgrading NGINX web server configuration..." -
 # Create a dedicated NGINX config
 ynh_add_nginx_config
 
+#=================================================
+# UPGRADE DEPENDENCIES
+#=================================================
+ynh_script_progression --message="Upgrading dependencies..." --weight=1
+
+ynh_install_app_dependencies $pkg_dependencies
+
 #=================================================
 # SPECIFIC UPGRADE
 #=================================================
@@ -116,29 +129,25 @@ if [ "$upgrade_type" == "UPGRADE_APP" ]; then
 	build_ui
 fi
 
+#=================================================
+# UPDATE A CONFIG FILE
+#=================================================
+ynh_script_progression --message="Updating a configuration file..."
+
+ynh_add_config --template=".env" --destination="$final_path/output/.env"
+
+set_permissions
+
 #=================================================
 # SETUP SYSTEMD
 #=================================================
 ynh_script_progression --message="Upgrading systemd configuration..." --weight=1
 
 # Create a dedicated systemd config
-ynh_add_systemd_config --service=$app 
-
-#=================================================
-# UPDATE A CONFIG FILE
-#=================================================
-
-ynh_add_config --template=".env" --destination="$final_path/output/.env"
+ynh_add_systemd_config
 
 #=================================================
 # GENERIC FINALIZATION
-#=================================================
-# SECURE FILES AND DIRECTORIES
-#=================================================
-
-# Set permissions on app files
-set_permissions
-
 #=================================================
 # SETUP LOGROTATE
 #=================================================
diff --git a/sources/extra_files/app/.gitignore b/sources/extra_files/app/.gitignore
deleted file mode 100644
index 783a4ae..0000000
--- a/sources/extra_files/app/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*~
-*.sw[op]
diff --git a/sources/patches/.gitignore b/sources/patches/.gitignore
deleted file mode 100644
index 783a4ae..0000000
--- a/sources/patches/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*~
-*.sw[op]