bugfiks: ordklasse var fosvunnet fra preview

src/components/Preview.vue

@@ -2,7 +2,7 @@
   <li>
     <div class="preview">
       <h4 v-html="previewHeader"></h4>
-      <h5 v-if="searchHit._source">{{group_list}}</h5>
+      <h5 v-if="searchHit.body">{{group_list}}</h5>
       {{previewText.substring(0, 40) + (previewText ? '...' : '')}}
     </div>
   </li>