Accept/reject CCLA requests

:fork_and_knife: Accept/reject CCLA requests from the web UI and a few other minor enhancements surrounding this feature.

![screen shot 2014-07-24 at 10 10 38 am](https://cloud.githubusercontent.com/assets/316507/3689024/58626cb2-133c-11e4-8156-a57932926ab6.png)

![screen shot 2014-07-24 at 10 10 41 am](https://cloud.githubusercontent.com/assets/316507/3689026/5c288ab6-133c-11e4-806f-27e230059a93.png)

![screen shot 2014-07-24 at 10 10 51 am](https://cloud.githubusercontent.com/assets/316507/3689028/5f1ab618-133c-11e4-8b7e-fe5eb76aa9f8.png)