Changes Task Def Buttons to use simple icons.

- resolves #424
- Polish
- Remove left margin style from first action button
- Remove width from definitions column for it to
  take remaining space and fix width of actions
  column.

Author: cppwfs

ui/src/app/tasks/task-definitions/task-definitions.component.html

@@ -28,8 +28,8 @@
   <thead>
   <tr>
     <th style="width: 70px"><a (click)="toggleDefinitionNameSort()"><span style="margin-right: 5px">Name</span></a><i class="fa" [ngClass]="{'fa-sort': definitionNameSort === undefined, 'fa-sort-asc': definitionNameSort === false, 'fa-sort-desc': definitionNameSort === true }" aria-hidden="true"></i></th>
-    <th style="width: 300px"><a (click)="toggleDefinitionSort()"><span style="margin-right: 5px">Definitions</span></a><i class="fa" [ngClass]="{'fa-sort': definitionSort === undefined, 'fa-sort-asc': definitionSort === false, 'fa-sort-desc': definitionSort === true }" aria-hidden="true"></i></th>
-    <th style="width: 240px" colspan="1" class="text-center">Actions</th>
+    <th><a (click)="toggleDefinitionSort()"><span style="margin-right: 5px">Definitions</span></a><i class="fa" [ngClass]="{'fa-sort': definitionSort === undefined, 'fa-sort-asc': definitionSort === false, 'fa-sort-desc': definitionSort === true }" aria-hidden="true"></i></th>
+    <th style="width: 126px" class="text-center">Actions</th>
   </tr>
   </thead>
 
@@ -42,12 +42,10 @@
         <button type="button" (click)="launchTask(item)"
                 class="btn btn-default" title="Launch">
           <span class="glyphicon glyphicon-play"></span>
-          Launch
         </button>
         <button type="button" [appRoles]="['ROLE_CREATE']" (click)="destroyTask(item)"
-                class="btn btn-default" title="Destroy">
+                class="btn btn-default" style="margin-left: 0;" title="Destroy">
           <span class="glyphicon glyphicon-remove"></span>
-          Destroy
         </button>
       </td>
     </tr>