More localization (#525)

* More localization

* Localize search dialog

* Fix "about" page title

frontend/src/components/UI/Dialogs/SearchDialog.vue

@@ -39,9 +39,9 @@
       <v-card class="mt-1 pa-1" relative>
         <v-card-actions>
           <div class="mr-auto">
-            Results
+            {{ $t('search.results') }}
           </div>
-          <router-link to="/search"> Advanced Search </router-link>
+          <router-link to="/search"> {{ $t('search.advanced-search') }} </router-link>
         </v-card-actions>
         <v-card-actions v-if="loading">
           <SiteLoader :loading="loading" />

frontend/src/components/UI/TheSidebar.vue

@@ -9,7 +9,7 @@
             <v-icon> mdi-heart </v-icon>
           </v-list-item-icon>
           <v-list-item-content>
-            <v-list-item-title> Favorites </v-list-item-title>
+            <v-list-item-title> {{ $t('general.favorites') }} </v-list-item-title>
           </v-list-item-content>
         </v-list-item>
       </template>