Improves album's year placement (#1366)

Better consistency between different views

front/src/components/audio/album/Card.vue

@@ -17,12 +17,10 @@
             {{ album.artist.name }}
           </router-link>
         </span>       
-        <div v-if="album.release_date">
-          {{ album.release_date | moment('Y') }}
-        </div>         
       </div>
     </div>
     <div class="extra content">
+      <span v-if="album.release_date">{{ album.release_date | moment('Y') }} · </span>
       <translate translate-context="*/*/*" :translate-params="{count: album.tracks_count}" :translate-n="album.tracks_count" translate-plural="%{ count } tracks">%{ count } track</translate>
       <play-button class="right floated basic icon" :dropdown-only="true" :is-playable="album.is_playable" :dropdown-icon-classes="['ellipsis', 'horizontal', 'large really discrete']" :album="album"></play-button>
     </div>

front/src/components/library/AlbumBase.vue

@@ -59,15 +59,12 @@
               <header>
                 <h2 class="ui header" :title="object.title">
                   {{ object.title }}              
-                  <span class="ui sub header" v-if="object.release_date">
-                    {{ object.release_date | moment('Y') }}
-                  </span>                   
                 </h2>
                 <artist-label class="rounded" :artist="artist"></artist-label>
               </header>
-              <div class="ui small hidden divider"></div>
+              <div v-if="object.release_date || (totalTracks > 0)" class="ui small hidden divider"></div>                                           
+              <span v-if="object.release_date">{{ object.release_date | moment('Y') }} · </span>
               <template v-if="totalTracks > 0">                
-                <div class="ui hidden very small divider"></div>
                 <translate key="1" v-if="isSerie" translate-context="Content/Channel/Paragraph"
                   translate-plural="%{ count } episodes"
                   :translate-n="totalTracks"