diff --git a/manifest.json b/manifest.json
index 30fc784..58bcdfd 100644
--- a/manifest.json
+++ b/manifest.json
@@ -11,7 +11,10 @@
     "name": "titoko",
     "email": "titoko@titoko.fr"
   },
-  "multi_instance": "true",
+  "multi_instance": true,
+  "requirements": {
+    "yunohost": ">= 2.3.14"
+  },
   "services": [
       "nginx",
       "php5-fpm",
diff --git a/scripts/backup b/scripts/backup
index fa6583b..794238a 100644
--- a/scripts/backup
+++ b/scripts/backup
@@ -1,15 +1,15 @@
 #!/bin/bash
-app=jappix
 
-# The parameter $1 is the backup directory location
-# which will be compressed afterward
-backup_dir=$1/apps/$app
-mkdir -p $backup_dir
+app=${!#}
 
-# Backup sources & data
-sudo cp -a /var/www/$app/. $backup_dir/sources
+# Retrieve arguments
+backup_dir=$1
 
-# Copy Nginx and YunoHost parameters to make the script "standalone"
-sudo cp -a /etc/yunohost/apps/$app/. $backup_dir/yunohost
-domain=$(sudo yunohost app setting $app domain)
-sudo cp -a /etc/nginx/conf.d/$domain.d/$app.conf $backup_dir/nginx.conf
\ No newline at end of file
+# Retrieve app settings
+domain=$(sudo yunohost app setting "$app" domain)
+
+# Save sources & data
+sudo cp -a "/var/www/${app}" ./sources
+
+# Copy NGINX configuration
+sudo cp -a "/etc/nginx/conf.d/${domain}.d/${app}.conf" ./nginx.conf
diff --git a/scripts/install b/scripts/install
index e97ce97..d61db8a 100644
--- a/scripts/install
+++ b/scripts/install
@@ -1,7 +1,11 @@
 #!/bin/bash
 
+set -e
+
 source ./_common.sh
 
+app=${!#}
+
 # Retrieve arguments
 domain=$1
 path=$2
@@ -9,7 +13,7 @@ name=$3
 language=$4
 
 # Check domain/path availability
-sudo yunohost app checkurl $domain$path -a jappix
+sudo yunohost app checkurl "${domain}${path}" -a "$app"
 if [[ ! $? -eq 0 ]]; then
 exit 1
 fi
@@ -21,16 +25,16 @@ path=${path%/}
 wget -nv -O jappix.tar.gz https://github.com/jappix/jappix/archive/${VERSION}.tar.gz
 
 # Copy files to the right place
-final_path=/var/www/jappix
-sudo mkdir -p $final_path
-sudo tar -C $final_path -xf jappix.tar.gz --strip-components 1
-sudo cp ../conf/*.xml $final_path/store/conf/
+final_path="/var/www/${app}"
+sudo mkdir -p "${final_path}/store/conf"
+sudo tar -C "$final_path" -xf jappix.tar.gz --strip-components 1
+sudo cp ../conf/*.xml "${final_path}/store/conf/"
 
 # Set permissions to jappix directory
-sudo chown -R www-data: $final_path
+sudo chown -R www-data: "$final_path"
 
 # Modify Nginx configuration file and copy it to Nginx conf directory
-sudo sed -i "s@PATHTOCHANGE2@$path@g" ../conf/nginx.conf
+sudo sed -i "s@PATHTOCHANGE2@${path}@g" ../conf/nginx.conf
 
 if [ -z "$path" ]; then
   path="/"
@@ -42,19 +46,18 @@ then
   language="en"
 fi
 
-sudo yunohost app setting jappix name -v $name
-sudo yunohost app setting jappix language -v $language
+sudo yunohost app setting "$app" name -v "$name"
+sudo yunohost app setting "$app" language -v "$language"
 
-sudo sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
-sudo sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
-sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/jappix.conf
-sudo sed -i "s@PATHTOCHANGE@$path@g" $final_path/store/conf/main.xml
-sudo sed -i "s@PATHTOCHANGE@$path@g" $final_path/store/conf/hosts.xml
-sudo sed -i "s@DOMAINTOCHANGE@$domain@g" $final_path/store/conf/main.xml
-sudo sed -i "s@CHANGELANG@$language@g" $final_path/store/conf/main.xml
-sudo sed -i "s@CHANGENAME@$name@g" $final_path/store/conf/main.xml
-sudo sed -i "s@DOMAINTOCHANGE@$domain@g" $final_path/store/conf/hosts.xml
+sudo sed -i "s@PATHTOCHANGE@${path}@g" ../conf/nginx.conf
+sudo sed -i "s@ALIASTOCHANGE@${final_path}/@g" ../conf/nginx.conf
+sudo cp ../conf/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/hosts.xml"
+sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@CHANGELANG@${language}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@CHANGENAME@${name}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/hosts.xml"
 
-# Reload Nginx and regenerate SSOwat conf
+# Reload services
 sudo service nginx reload
-sudo yunohost app ssowatconf
diff --git a/scripts/remove b/scripts/remove
index e4d284f..a3cb6a6 100644
--- a/scripts/remove
+++ b/scripts/remove
@@ -1,8 +1,13 @@
 #!/bin/bash
-domain=$(sudo yunohost app setting jappix domain)
 
-sudo rm -rf /var/www/jappix
-sudo rm -f /etc/nginx/conf.d/$domain.d/jappix.conf
+app=${!#}
 
+# Retrieve arguments
+domain=$(sudo yunohost app setting "$app" domain)
+
+# Remove sources and configuration
+sudo rm -rf "/var/www/${app}"
+sudo rm -f "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+
+# Reload services
 sudo service nginx reload
-sudo yunohost app ssowatconf
diff --git a/scripts/restore b/scripts/restore
index c5ff657..660458a 100644
--- a/scripts/restore
+++ b/scripts/restore
@@ -1,16 +1,18 @@
 #!/bin/bash
-app=jappix
 
-# The parameter $1 is the uncompressed restore directory location
-backup_dir=$1/apps/$app
+app=${!#}
+
+# Retrieve arguments
+backup_dir=$1
+
+# Retrieve old app settings
+domain=$(sudo yunohost app setting "$app" domain)
 
 # Restore sources & data
-sudo cp -a $backup_dir/sources/. /var/www/$app
+sudo cp -a ./sources "/var/www/${app}"
 
 # Restore Nginx and YunoHost parameters
-sudo cp -a $backup_dir/yunohost/. /etc/yunohost/apps/$app
-domain=$(sudo yunohost app setting $app domain)
-sudo cp -a $backup_dir/nginx.conf /etc/nginx/conf.d/$domain.d/$app.conf
+sudo cp -a ./nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
 
-# Restart webserver
-sudo service nginx reload
\ No newline at end of file
+# Reload services
+sudo service nginx reload
diff --git a/scripts/upgrade b/scripts/upgrade
index 184e93e..12c3c95 100644
--- a/scripts/upgrade
+++ b/scripts/upgrade
@@ -2,11 +2,13 @@
 
 source ./_common.sh
 
+app=${!#}
+
 # Retrieve arguments
-domain=$(sudo yunohost app setting jappix domain)
-path=$(sudo yunohost app setting jappix path)
-name=$(sudo yunohost app setting jappix name)
-language=$(sudo yunohost app setting jappix language)
+domain=$(sudo yunohost app setting "$app" domain)
+path=$(sudo yunohost app setting "$app" path)
+name=$(sudo yunohost app setting "$app" name)
+language=$(sudo yunohost app setting "$app" language)
 
 if [[ "$name" = "" ]];
 then
@@ -24,31 +26,30 @@ path=${path%/}
 wget -nv -O jappix.tar.gz https://github.com/jappix/jappix/archive/${VERSION}.tar.gz
 
 # Copy files to the right place
-final_path=/var/www/jappix
-sudo mkdir -p $final_path
-sudo tar -C $final_path -xf jappix.tar.gz --strip-components 1
-sudo cp ../conf/*.xml $final_path/store/conf/
+final_path="/var/www/${app}"
+sudo mkdir -p "$final_path"
+sudo tar -C "$final_path" -xf jappix.tar.gz --strip-components 1
+sudo cp ../conf/*.xml "${final_path}/store/conf/"
 
 # Set permissions to jappix directory
-sudo chown -R www-data: $final_path
+sudo chown -R www-data: "$final_path"
 
 # Modify Nginx configuration file and copy it to Nginx conf directory
-sudo sed -i "s@PATHTOCHANGE2@$path@g" ../conf/nginx.conf
+sudo sed -i "s@PATHTOCHANGE2@${path}@g" ../conf/nginx.conf
 
 if [ -z "$path" ]; then
   path="/"
 fi
 
-sudo sed -i "s@PATHTOCHANGE@$path@g" ../conf/nginx.conf
-sudo sed -i "s@ALIASTOCHANGE@$final_path/@g" ../conf/nginx.conf
-sudo cp ../conf/nginx.conf /etc/nginx/conf.d/$domain.d/jappix.conf
-sudo sed -i "s@PATHTOCHANGE@$path@g" $final_path/store/conf/main.xml
-sudo sed -i "s@PATHTOCHANGE@$path@g" $final_path/store/conf/hosts.xml
-sudo sed -i "s@DOMAINTOCHANGE@$domain@g" $final_path/store/conf/main.xml
-sudo sed -i "s@CHANGELANG@$language@g" $final_path/store/conf/main.xml
-sudo sed -i "s@CHANGENAME@$name@g" $final_path/store/conf/main.xml
-sudo sed -i "s@DOMAINTOCHANGE@$domain@g" $final_path/store/conf/hosts.xml
+sudo sed -i "s@PATHTOCHANGE@${path}@g" ../conf/nginx.conf
+sudo sed -i "s@ALIASTOCHANGE@${final_path}/@g" ../conf/nginx.conf
+sudo cp ../conf/nginx.conf "/etc/nginx/conf.d/${domain}.d/${app}.conf"
+sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@PATHTOCHANGE@${path}@g" "${final_path}/store/conf/hosts.xml"
+sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@CHANGELANG@${language}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@CHANGENAME@${name}@g" "${final_path}/store/conf/main.xml"
+sudo sed -i "s@DOMAINTOCHANGE@${domain}@g" "${final_path}/store/conf/hosts.xml"
 
-# Reload Nginx and regenerate SSOwat conf
+# Reload services
 sudo service nginx reload
-sudo yunohost app ssowatconf