[wip] Right align column context menu arrow

Signed-off-by: Alex Coles <alex@alexbcoles.com>

public/templates/work_packages/work_packages_table.html

@@ -29,8 +29,10 @@
               target="columnContextMenu"
               process-event="adaptVerticalPosition"
               trigger-on-event="click">
+          <span style="float: right">
             <icon-wrapper icon-name="pulldown-arrow1" title="{{I18n.t('js.label_open_menu')}}"></icon-wrapper>
           </span>
+        </span>
       </th>
     </tr>
   </thead>