[enh] create blocks for MySQL and PHP command lines which are optionnals.

scripts/backup

@@ -13,19 +13,21 @@ app=$YNH_APP_INSTANCE_NAME
 # Note: the last argument is where to save this path, see the restore script.
 ynh_backup "/var/www/${app}" "sources"
 
+### MySQL (remove if not used) ###
 # If a MySQL database is used:
-#
 # # Dump the database
 # dbname=$app
 # dbuser=$app
 # dbpass=$(ynh_app_setting_get "$app" mysqlpwd)
 # mysqldump -u "$dbuser" -p"$dbpass" --no-create-db "$dbname" > ./dump.sql
+### MySQL end ###
 
 # Copy NGINX configuration
 domain=$(ynh_app_setting_get "$app" domain)
 ynh_backup "/etc/nginx/conf.d/${domain}.d/${app}.conf" "nginx.conf"
 
+### 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 ###