Create user config in one place

Using a listener, user config is now created when a user:

- is created from the command line
- register (with or without email confirmation)
- is created from the config panel

src/Wallabag/UserBundle/Resources/config/services.yml

@@ -20,3 +20,15 @@ services:
         factory: [ "@doctrine.orm.default_entity_manager", getRepository ]
         arguments:
             - WallabagUserBundle:User
+
+    wallabag_user.create_config:
+        class: Wallabag\UserBundle\EventListener\CreateConfigListener
+        arguments:
+            - "@doctrine.orm.entity_manager"
+            - "%wallabag_core.theme%"
+            - "%wallabag_core.items_on_page%"
+            - "%wallabag_core.rss_limit%"
+            - "%wallabag_core.language%"
+            - "%wallabag_core.reading_speed%"
+        tags:
+            - { name: kernel.event_subscriber }