admin: display file dependancies and be able to remove them

admin/static/views/exercice.html

@@ -57,6 +57,16 @@
 	      Taille&nbsp;: <span title="{{ file.size }} octets">{{ file.size | size }}</span> &dash;
 	      BLAKE2b&nbsp;: <samp title="{{ file.checksum | cksum }}">{{ file.checksum | cksum }}</samp>
 	    </div>
+	    <div>
+	      Dépend de la validation de :
+	      <span ng-if="!file.depends">aucun flag</span>
+	      <ul ng-if="file.depends">
+		<li ng-repeat="dep in file.depends">
+		  {{ dep.label }}
+		  <button type="button" class="btn btn-sm btn-danger" ng-click="deleteFileDep()"><span class="glyphicon glyphicon-trash"></span></button>
+		</li>
+	      </ul>
+	    </div>
 	  </form>
 	</div>
       </div>