force apps to get content ratings before resubmit, geodata flag for iarc purge (bug 971049)

IARC Purge - on April 15th, we disable public apps without content ratings

1. When an app is rejected, don't allow to resubmit without content rating.
2. When an app is "purged" but then gets a content rating, automatically re-enable.

![screen shot 2014-03-10 at 6 07 14 pm](https://f.cloud.github.com/assets/674727/2381080/f192d1f8-a8b9-11e3-968b-000fa4512525.png)
![screen shot 2014-03-10 at 6 09 27 pm](https://f.cloud.github.com/assets/674727/2381082/f7d4b5cc-a8b9-11e3-8188-902674cf3ec3.png)