WIP: Resolve "Restore from legacy backup"

Closes #182

utils/backup_app.sh

@@ -8,13 +8,6 @@
 #- Note: vm archive's name will be built with the app's name.
 #- Warning: sshpass package has to be installed.
 
-
-#--- Example of connexion parameters:
-# HOST_NAME='jaguar.ekimia.fr'
-# HOST_USER='root'
-# HOST_PORT=622
-# DB_NAME='piwigo'
-# DB_USER='piwigo'
 #-- File where host user's password is stored during script is runnung:
 PSWDFILE=".nopaswd"
 
@@ -70,7 +63,7 @@ function set_app_directories ()
       piwigo)
          #-- i=photos/_data/i ; upload=photos/upload
          APP_DIR="/var/www/photos" ;
-         APP_DIRS=( "_data/i" "upload" ) ;
+         APP_DIRS=( "_data/i" "upload" "local/config" ) ;
       ;;
       prestashop)
          APP_DIR="/var/www/html" ;