UI fixes for all the new trigger stuff

static/directives/repo-view/repo-panel-builds.html

@@ -54,7 +54,6 @@
                 style="min-width: 66px;">
               <a href="javascript:void(0)" ng-click="orderBy('tags')">Tags</a>
             </td>
-            <td class="options-col hidden-xs"></td>
            </thead>
 
            <tr ng-repeat="build in fullBuilds">
@@ -139,6 +138,7 @@
             <td>{{ trigger.config.branchtag_regex || 'All' }}</td>
             <td>
               <span class="entity-reference" entity="trigger.pull_robot" ng-if="trigger.pull_robot"></span>
+              <span class="empty" ng-if="!trigger.pull_robot">(None)</span>
             </td>
             <td>
               <span class="cor-options-menu">