fix(Aggregation) Remove unnecessary space

I don't see AggItemsLabel used anywhere in the code.

Fixes #1216

src/templates/aggregateTemplate.html

@@ -1,4 +1,4 @@
 <div ng-click="row.toggleExpand()" ng-style="rowStyle(row)" class="ngAggregate">
-    <span class="ngAggregateText">{{row.label CUSTOM_FILTERS}} ({{row.totalChildren()}} {{AggItemsLabel}})</span>
+    <span class="ngAggregateText">{{row.label CUSTOM_FILTERS}} ({{row.totalChildren()}}{{AggItemsLabel}})</span>
     <div class="{{row.aggClass()}}"></div>
 </div>