Added missing workflow mappings

Story: https://www.pivotaltracker.com/story/show/74589430

I confirmed this commit fixes the caching issue (http://grc-ux.appspot.com has this commit included in it's current deployment).
```
-    mapping('CycleTaskGroupObjectTask', 'task'),
+   mapping('CycleTaskGroupObjectTask', 'task_group_task'),
+   mapping('CycleTaskGroupObjectTask', 'cycle_task_group_object'),
```