Remove LiipThemeBundle

As baggy theme was removed and material is the only remaining theme, we don't need a theme switched anymore.
So:
- move all `*.twig` files from the material theme folder to the root
- remove useless translations

src/Wallabag/CoreBundle/Controller/ConfigController.php

@@ -8,7 +8,6 @@ use Doctrine\Persistence\ManagerRegistry;
 use FOS\UserBundle\Model\UserManagerInterface;
 use JMS\Serializer\SerializationContext;
 use JMS\Serializer\SerializerBuilder;
-use Liip\ThemeBundle\ActiveTheme;
 use PragmaRX\Recovery\Recovery as BackupCodes;
 use Scheb\TwoFactorBundle\Security\TwoFactor\Provider\Google\GoogleAuthenticatorInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\Controller;
@@ -55,25 +54,11 @@ class ConfigController extends Controller
         $configForm->handleRequest($request);
 
         if ($configForm->isSubmitted() && $configForm->isValid()) {
-            // force theme to material to avoid using baggy
-            if ('baggy' === $config->getTheme()) {
-                $config->setTheme('material');
-
-                $this->addFlash(
-                    'notice',
-                    'Baggy is gone, forced to Material theme.'
-                );
-            }
-
             $em->persist($config);
             $em->flush();
 
             $request->getSession()->set('_locale', $config->getLanguage());
 
-            // switch active theme
-            $activeTheme = $this->get(ActiveTheme::class);
-            $activeTheme->setName($config->getTheme());
-
             $this->addFlash(
                 'notice',
                 'flashes.config.notice.config_saved'

src/Wallabag/CoreBundle/Controller/EntryController.php

@@ -579,7 +579,7 @@ class EntryController extends Controller
         }
 
         return $this->render(
-            '@WallabagCore/themes/common/Entry/share.html.twig',
+            '@WallabagCore/Entry/share.html.twig',
             ['entry' => $entry]
         );
     }

src/Wallabag/CoreBundle/Controller/FeedController.php

@@ -144,7 +144,7 @@ class FeedController extends Controller
         }
 
         return $this->render(
-            '@WallabagCore/themes/common/Entry/entries.xml.twig',
+            '@WallabagCore/Entry/entries.xml.twig',
             [
                 'type' => 'tag',
                 'url' => $url,
@@ -228,7 +228,7 @@ class FeedController extends Controller
             }
         }
 
-        return $this->render('@WallabagCore/themes/common/Entry/entries.xml.twig', [
+        return $this->render('@WallabagCore/Entry/entries.xml.twig', [
             'type' => $type,
             'url' => $url,
             'entries' => $entries,

src/Wallabag/CoreBundle/Controller/StaticController.php

@@ -15,7 +15,7 @@ class StaticController extends Controller
         $addonsUrl = $this->container->getParameter('addons_url');
 
         return $this->render(
-            '@WallabagCore/themes/common/Static/howto.html.twig',
+            '@WallabagCore/Static/howto.html.twig',
             [
                 'addonsUrl' => $addonsUrl,
             ]
@@ -28,7 +28,7 @@ class StaticController extends Controller
     public function aboutAction()
     {
         return $this->render(
-            '@WallabagCore/themes/common/Static/about.html.twig',
+            '@WallabagCore/Static/about.html.twig',
             [
                 'version' => $this->getParameter('wallabag_core.version'),
                 'paypal_url' => $this->getParameter('wallabag_core.paypal_url'),
@@ -42,7 +42,7 @@ class StaticController extends Controller
     public function quickstartAction()
     {
         return $this->render(
-            '@WallabagCore/themes/common/Static/quickstart.html.twig'
+            '@WallabagCore/Static/quickstart.html.twig'
         );
     }
 }