fixed unclosed selected html tag (caused issue with optimized build version so no options where shown in graph edit tabs)

src/app/panels/graphite/module.html

@@ -32,8 +32,8 @@
           <div class="section">
             <div class="editor-option">
               <label class="small">Datasource</label>
-              <select class="input-large" ng-options="obj.value as obj.name for obj in datasources" ng-model="panel.datasource" ng-change="datasourceChanged()" />
-          </div>
+              <select class="input-large" ng-options="obj.value as obj.name for obj in datasources" ng-model="panel.datasource" ng-change="datasourceChanged()"></select>
+            </div>
           </div>
         </div>
       </div>