Added context strings

front/src/components/audio/Search.vue

 <template>
   <div>
-    <h2><translate>Search for some music</translate></h2>
+    <h2><translate :translate-context="'Content/Search/Title'">Search for some music</translate></h2>
     <div :class="['ui', {'loading': isLoading }, 'search']">
       <div class="ui icon big input">
         <i class="search icon"></i>
@@ -8,22 +8,22 @@
       </div>
     </div>
     <template v-if="query.length > 0">
-      <h3 class="ui title"><translate>Artists</translate></h3>
+      <h3 class="ui title"><translate :translate-context="'Content/Search/Title'">Artists</translate></h3>
       <div v-if="results.artists.length > 0" class="ui stackable three column grid">
         <div class="column" :key="artist.id" v-for="artist in results.artists">
           <artist-card class="fluid" :artist="artist" ></artist-card>
         </div>
       </div>
-      <p v-else><translate>No artist matched your query</translate></p>
+      <p v-else><translate :translate-context="'Content/Search/Paragraph'">No artist matched your query</translate></p>
     </template>
     <template v-if="query.length > 0">
-      <h3 class="ui title"><translate>Albums</translate></h3>
+      <h3 class="ui title"><translate :translate-context="'Content/Search/Title'">Albums</translate></h3>
       <div v-if="results.albums.length > 0" class="ui stackable three column grid">
         <div class="column" :key="album.id" v-for="album in results.albums">
           <album-card class="fluid" :album="album" ></album-card>
         </div>
       </div>
-      <p v-else><translate>No album matched your query</translate></p>
+      <p v-else><translate :translate-context="'Content/Search/Paragraph'">No album matched your query</translate></p>
     </template>
   </div>
 </template>
@@ -62,7 +62,7 @@ export default {
   computed: {
     labels () {
       return {
-        searchPlaceholder: this.$gettext('Artist, album, track…')
+        searchPlaceholder: this.$pgettext('*/Search/Input.Placeholder', 'Artist, album, track…')
       }
     }
   },