diff --git a/README.md b/README.md
index ec0e046..dfce394 100644
--- a/README.md
+++ b/README.md
@@ -57,7 +57,6 @@ $ screen -r
 
 * x86-64b - [![Build Status](https://ci-apps.yunohost.org/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-apps.yunohost.org/ci/apps/mastodon/)
 * ARMv8-A - [![Build Status](https://ci-apps-arm.yunohost.org/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-apps-arm.yunohost.org/ci/apps/mastodon/)
-* Jessie x86-64b - [![Build Status](https://ci-stretch.nohost.me/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-stretch.nohost.me/ci/apps/mastodon/)
 
 ## Links
 
diff --git a/README_fr.md b/README_fr.md
index 6bea9d1..2092750 100644
--- a/README_fr.md
+++ b/README_fr.md
@@ -57,7 +57,6 @@ L'utilisateur admin est crée automatiquement comme: user@domain.tld
 
 * x86-64b - [![Build Status](https://ci-apps.yunohost.org/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-apps.yunohost.org/ci/apps/mastodon/)
 * ARMv8-A - [![Build Status](https://ci-apps-arm.yunohost.org/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-apps-arm.yunohost.org/ci/apps/mastodon/)
-* Jessie x86-64b - [![Build Status](https://ci-stretch.nohost.me/ci/logs/mastodon%20%28Apps%29.svg)](https://ci-stretch.nohost.me/ci/apps/mastodon/)
 
 ## Links
 
diff --git a/conf/nginx.conf b/conf/nginx.conf
index 190c650..7fa7b87 100644
--- a/conf/nginx.conf
+++ b/conf/nginx.conf
@@ -6,70 +6,70 @@ root __FINALPATH__/live/public;
 
 location / {
 
-	if ($scheme = http) {
-	rewrite ^ https://$server_name$request_uri? permanent;
-	}
+  # Force usage of https
+  if ($scheme = http) {
+    rewrite ^ https://$server_name$request_uri? permanent;
+  }
 
-	proxy_set_header Accept-Encoding "";
-	try_files $uri @proxy;
+  proxy_set_header Accept-Encoding "";
+  try_files $uri @proxy;
 
-	# Include SSOWAT user panel.
-	include conf.d/yunohost_panel.conf.inc;
+  # Include SSOWAT user panel.
+  include conf.d/yunohost_panel.conf.inc;
 }
 
 location ~ ^/(emoji|packs|system/accounts/avatars|system/media_attachments/files) {
-    add_header Cache-Control "public, max-age=31536000, immutable";
-    add_header Strict-Transport-Security "max-age=31536000";
-    try_files $uri @proxy;
+  add_header Cache-Control "public, max-age=31536000, immutable";
+  add_header Strict-Transport-Security "max-age=31536000";
+  try_files $uri @proxy;
 }
 
 location /sw.js {
-    add_header Cache-Control "public, max-age=0";
-    add_header Strict-Transport-Security "max-age=31536000";
-    try_files $uri @proxy;
+  add_header Cache-Control "public, max-age=0";
+  add_header Strict-Transport-Security "max-age=31536000";
+  try_files $uri @proxy;
 }
 
 location @proxy {
-    proxy_set_header Host $host;
-    proxy_set_header X-Real-IP $remote_addr;
-    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-    proxy_set_header X-Forwarded-Proto https;
-    proxy_set_header Proxy "";
-    proxy_pass_header Server;
+  proxy_set_header Host $host;
+  proxy_set_header X-Real-IP $remote_addr;
+  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+  proxy_set_header X-Forwarded-Proto https;
+  proxy_set_header Proxy "";
+  proxy_pass_header Server;
 
-    proxy_pass http://127.0.0.1:3000;
-    proxy_buffering on;
-    proxy_redirect off;
-    proxy_http_version 1.1;
-    proxy_set_header Upgrade $http_upgrade;
-    proxy_set_header Connection "upgrade";
+  proxy_pass http://127.0.0.1:3000;
+  proxy_buffering on;
+  proxy_redirect off;
+  proxy_http_version 1.1;
+  proxy_set_header Upgrade $http_upgrade;
+  proxy_set_header Connection "upgrade";
 
-    #proxy_cache CACHE;
-    proxy_cache_valid 200 7d;
-    proxy_cache_valid 410 24h;
-    proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
-    add_header X-Cached $upstream_cache_status;
-    add_header Strict-Transport-Security "max-age=31536000";
+  #proxy_cache CACHE;
+  proxy_cache_valid 200 7d;
+  proxy_cache_valid 410 24h;
+  proxy_cache_use_stale error timeout updating http_500 http_502 http_503 http_504;
+  add_header X-Cached $upstream_cache_status;
+  add_header Strict-Transport-Security "max-age=31536000";
 
-    tcp_nodelay on;
+  tcp_nodelay on;
 }
 
 location /api/v1/streaming {
-	proxy_set_header Host $host;
-	proxy_set_header X-Real-IP $remote_addr;
-	proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-	proxy_set_header X-Forwarded-Proto https;
-	proxy_set_header Proxy "";
-	
-	proxy_pass http://127.0.0.1:4000;
-	proxy_buffering off;
-	proxy_redirect off;
-	proxy_http_version 1.1;
-	proxy_set_header Upgrade $http_upgrade;
-	proxy_set_header Connection "upgrade";
-	
-	tcp_nodelay on;
+  proxy_set_header Host $host;
+  proxy_set_header X-Real-IP $remote_addr;
+  proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+  proxy_set_header X-Forwarded-Proto https;
+  proxy_set_header Proxy "";
+
+  proxy_pass http://127.0.0.1:4000;
+  proxy_buffering off;
+  proxy_redirect off;
+  proxy_http_version 1.1;
+  proxy_set_header Upgrade $http_upgrade;
+  proxy_set_header Connection "upgrade";
+
+  tcp_nodelay on;
 }
 
-
-error_page 500 501 502 503 504 /500.html;
\ No newline at end of file
+error_page 500 501 502 503 504 /500.html;
diff --git a/scripts/_common.sh b/scripts/_common.sh
index 904553d..029d4ff 100644
--- a/scripts/_common.sh
+++ b/scripts/_common.sh
@@ -5,8 +5,7 @@
 #=================================================
 
 # dependencies used by the app
-#pkg_dependencies="imagemagick ffmpeg libpq-dev libxml2-dev libxslt1-dev file git-core g++ libprotobuf-dev protobuf-compiler pkg-config nodejs gcc autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm5 libgdbm-dev nginx redis-server redis-tools postgresql postgresql-contrib certbot python-certbot-nginx yarn libidn11-dev libicu-dev libjemalloc-dev"
- pkg_dependencies="imagemagick ffmpeg libpq-dev libxml2-dev libxslt1-dev file git-core g++ libprotobuf-dev protobuf-compiler pkg-config        gcc autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev       redis-server redis-tools postgresql postgresql-contrib                                   libidn11-dev libicu-dev libjemalloc-dev curl apt-transport-https"
+pkg_dependencies="imagemagick ffmpeg libpq-dev libxml2-dev libxslt1-dev file git-core g++ libprotobuf-dev protobuf-compiler pkg-config        gcc autoconf bison build-essential libssl-dev libyaml-dev libreadline6-dev zlib1g-dev libncurses5-dev libffi-dev libgdbm3 libgdbm-dev       redis-server redis-tools postgresql postgresql-contrib                                   libidn11-dev libicu-dev libjemalloc-dev curl apt-transport-https"
 
 #=================================================
 # PERSONAL HELPERS
diff --git a/scripts/backup b/scripts/backup
index 62ac387..61ad5f4 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -13,6 +13,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
+ynh_script_progression --message="Managing script failure..." --weight=1
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -77,6 +78,7 @@ ynh_backup --src_path="/etc/systemd/system/$app-streaming.service"
 #=================================================
 # BACKUP A CRON FILE
 #=================================================
+ynh_script_progression --message="Backing up a cron file..." --weight=1
 
 ynh_backup --src_path="/etc/cron.d/$app"
 
diff --git a/scripts/install b/scripts/install
index 58f0caa..989954b 100644
--- a/scripts/install
+++ b/scripts/install
@@ -17,6 +17,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
+ynh_script_progression --message="Managing script failure..." --weight=1
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -27,6 +28,7 @@ ynh_abort_if_errors
 #=================================================
 # RETRIEVE ARGUMENTS FROM THE MANIFEST
 #=================================================
+ynh_script_progression --message="Retrieving arguments from the manifest..." --weight=1
 
 domain=$YNH_APP_ARG_DOMAIN
 path_url="/"
@@ -67,7 +69,7 @@ ynh_app_setting_set --app=$app --key=language --value=$language
 #=================================================
 ynh_script_progression --message="Configuring firewall..." --weight=1
 
-# Find a free port
+# Find an available port
 port_web=$(ynh_find_port --port=3000)
 port_stream=$(ynh_find_port --port=4000)
 # Open this port
@@ -91,7 +93,7 @@ ynh_script_progression --message="Creating a PostgreSQL database..." --weight=5
 # Create postgresql database
 db_name="${app}_production"
 db_user=$app
-db_pwd=$(ynh_string_random 30)
+db_pwd=$(ynh_string_random --length=30)
 ynh_app_setting_set --app=$app --key=db_name --value=$db_name
 ynh_app_setting_set --app=$app --key=db_pwd --value=$db_pwd
 ynh_psql_test_if_first_run
@@ -129,6 +131,7 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
+ynh_script_progression --message="Adding swap is needed..." --weight=4
 
 total_memory=$(ynh_check_ram)
 total_swap=$(ynh_check_ram --only_swap)
@@ -251,9 +254,9 @@ ynh_script_progression --message="Securing files and directories..." --weight=9
 chown -R "$app": "$final_path"
 
 #=================================================
-# ADVERTISE SERVICE IN ADMIN PANEL
+# INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Advertising service in admin panel..." --weight=3
+ynh_script_progression --message="Integrating service in YunoHost..." --weight=3
 
 yunohost service add "$app-web"
 yunohost service add "$app-sidekiq"
diff --git a/scripts/remove b/scripts/remove
index 3db3310..f2b2e16 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -27,23 +27,24 @@ final_path=$(ynh_app_setting_get --app=$app --key=final_path)
 #=================================================
 # STANDARD REMOVE
 #=================================================
-# REMOVE SERVICE FROM ADMIN PANEL
+# REMOVE SERVICE INTEGRATION IN YUNOHOST
 #=================================================
+ynh_script_progression --message="Removing service integration in YunoHost..." --weight=2
 
-# Remove a service from the admin panel, added by `yunohost service add`
-if yunohost service status "$app-web" >/dev/null 2>&1
+# Remove the service from the list of services known by Yunohost (added from `yunohost service add`)
+if ynh_exec_warn_less yunohost service status "$app-web" >/dev/null
 then
 	ynh_script_progression --message="Removing $app-web service..." --weight=2
 	yunohost service remove "$app-web"
 fi
 
-if yunohost service status "$app-sidekiq" >/dev/null 2>&1
+if ynh_exec_warn_less yunohost service status "$app-sidekiq" >/dev/null
 then
 	ynh_script_progression --message="Removing $app-sidekiq service..." --weight=2
 	yunohost service remove "$app-sidekiq"
 fi
 
-if yunohost service status "$app-streaming" >/dev/null 2>&1
+if ynh_exec_warn_less yunohost service status "$app-streaming" >/dev/null
 then
 	ynh_script_progression --message="Removing $app-streaming service..." --weight=2
 	yunohost service remove "$app-streaming"
@@ -99,6 +100,7 @@ ynh_remove_nginx_config
 #=================================================
 # REMOVE THE CRON FILE
 #=================================================
+ynh_script_progression --message="Removing the cron file..." --weight=2
 
 # Remove a cron file
 ynh_secure_remove --file="/etc/cron.d/$app"
diff --git a/scripts/restore b/scripts/restore
index 1985b26..c6e4bc8 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -17,6 +17,7 @@ source /usr/share/yunohost/helpers
 #=================================================
 # MANAGE SCRIPT FAILURE
 #=================================================
+ynh_script_progression --message="Managing script failure..." --weight=2
 
 ynh_clean_setup () {
 	ynh_clean_check_starting
@@ -85,6 +86,7 @@ chown -R $app: $final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
+ynh_script_progression --message="Adding swap if needed..." --weight=4
 
 total_memory=$(ynh_check_ram)
 total_swap=$(ynh_check_ram --only_swap)
@@ -137,9 +139,9 @@ ynh_restore_file --origin_path="/etc/systemd/system/$app-streaming.service"
 systemctl enable "$app-web" "$app-sidekiq" "$app-streaming"
 
 #=================================================
-# ADVERTISE SERVICE IN ADMIN PANEL
+# INTEGRATE SERVICE IN YUNOHOST
 #=================================================
-ynh_script_progression --message="Advertising service in admin panel..." --weight=3
+ynh_script_progression --message="Integrating service in YunoHost..." --weight=3
 
 yunohost service add $app-web
 yunohost service add $app-sidekiq
diff --git a/scripts/upgrade b/scripts/upgrade
index 9cfe1cc..32426a2 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -42,6 +42,7 @@ vapid_public_key=$(ynh_app_setting_get --app=$app --key=vapid_public_key)
 #=================================================
 # CHECK VERSION
 #=================================================
+ynh_script_progression --message="Checking version..." --weight=1
 
 upgrade_type=$(ynh_check_app_version_changed)
 
@@ -147,6 +148,11 @@ ynh_abort_if_errors
 #=================================================
 
 # Normalize the URL path syntax
+# N.B. : this is for app installations before YunoHost 2.7
+# where this value might be something like /foo/ or foo/
+# instead of /foo ....
+# If nobody installed your app before 2.7, then you may
+# safely remove this line
 path_url=$(ynh_normalize_url_path --path_url=$path_url)
 
 #=================================================
@@ -218,6 +224,7 @@ ynh_system_user_create --username=$app --home_dir=$final_path
 #=================================================
 # ADD SWAP IF NEEDED
 #=================================================
+ynh_script_progression --message="Adding swap if needed..." --weight=7
 
 total_memory=$(ynh_check_ram)
 total_swap=$(ynh_check_ram --only_swap)