Add LiipThemeBundle

Re-defined the config / user relation to be OneToOne bidirectionnal.
ConfigType is now a service so I can inject the list of available themes that are also used by LiipThemeBundle

Force sqlite for test
In case of people use a different driver in parameter.yml (yes I do :))

app/config/config.yml

@@ -128,3 +128,24 @@ nelmio_cors:
             allow_methods: ['POST', 'PUT', 'GET', 'DELETE']
             max_age: 3600
             hosts: ['^api\.']
+
+liip_theme:
+    load_controllers: false
+    themes:
+        - baggy
+        - dark
+        - default
+        - dmagenta
+        - solarized
+        - solarized-dark
+    autodetect_theme: wallabag_core.helper.detect_active_theme
+
+    path_patterns:
+        app_resource:
+            - %%app_path%%/views/themes/%%current_theme%%/%%template%%
+            - %%app_path%%/views/%%template%%
+        bundle_resource:
+            - %%bundle_path%%/Resources/views/themes/%%current_theme%%/%%template%%
+        bundle_resource_dir:
+            - %%dir%%/views/themes/%%current_theme%%/%%bundle_name%%/%%template%%
+            - %%dir%%/views/%%bundle_name%%/%%override_path%%