Merge branch 'master' into 4-mongodb_api

frontend/src/app/component/images/images.component.html

@@ -110,6 +110,7 @@
               <mat-grid-tile colspan="3">
                 <div style="display: block; width: 100%">
                   <p *ngIf="relImage.filename">filename: {{relImage.filename}}</p>
+                  <p *ngIf="relImage.tag">tag: {{relImage.tag}}</p>
                   <p *ngIf="relImage.latitude">latitude: {{relImage.latitude}}</p>
                   <p *ngIf="relImage.longitude">longitude: {{relImage.longitude}}</p>
                 </div>