fix issue with not property shown selects, if options are loaded in runtime.

Issue: 3985
#3985

Author: Simkin, Maksim

src/templates/ui-grid/ui-grid-filter.html

@@ -8,7 +8,7 @@
   </div>
 
   <div ng-if="colFilter.type === 'select'">
-    <select class="ui-grid-filter-select" ng-model="colFilter.term" ng-attr-placeholder="{{colFilter.placeholder || ''}}" ng-options="option.value as option.label for option in colFilter.selectOptions">
+    <select class="ui-grid-filter-select" ng-model="colFilter.term" ng-show="colFilter.selectOptions.length > 0" ng-attr-placeholder="{{colFilter.placeholder || ''}}" ng-options="option.value as option.label for option in colFilter.selectOptions">
       <option value=""></option>
     </select>