[UX] reconsider profile/invitation organization

### Profile Upon Initial Login

<img width="894" alt="screen shot 2016-02-06 at 11 17 59 am" src="https://cloud.githubusercontent.com/assets/3048412/12868809/5691b0d6-ccc3-11e5-8818-8000ec1c86d1.png">
1. Cons: does not appear to be a good use of space. Might be better to refactor invitations to its own page and include a link to invitations in the navbar.
