reviewer tools to use commbadge over ActivityLog (bug 920743/920746)

As a command.

Might be notable to look at the mapping ActivityLog actions to Commbadge actions, check if I missed or mis-mapped anything.

```diff
+def _action_map(activity_action):
+    """Maps ActivityLog action ids to Commbadge note types."""
+    return {
+        amo.LOG.APPROVE_VERSION.id: 'approve',
+        amo.LOG.APPROVE_VERSION_WAITING.id: 'approve',
+        amo.LOG.REJECT_VERSION.id: 'reject',
+        amo.LOG.APP_DISABLED.id: 'disable',
+        amo.LOG.REQUEST_INFORMATION.id: 'info',
+        amo.LOG.ESCALATE_VERSION.id: 'escalate',
+        amo.LOG.ESCALATION_CLEARED.id: 'escalate',
+        amo.LOG.ESCALATED_HIGH_ABUSE.id: 'escalate',
+        amo.LOG.ESCALATED_HIGH_REFUNDS.id: 'escalate',
+        amo.LOG.COMMENT_VERSION.id: 'comment',
+        amo.LOG.WEBAPP_RESUBMIT.id: 'resubmit',
+    }.get(activity_action, 'no_action') 
```

**Some migrated notes**

The ```modified``` is from when I ran the command. The ```created``` is from when the original ```ActivityLog``` was created.

![screen shot 2013-10-09 at 11 52 30 am](https://f.cloud.github.com/assets/674727/1300568/0f6a7cb2-3114-11e3-8ffc-67b454326f0a.png)