Issue 947 Improved the UI of the edit profile page

https://openhatch.org/bugs/issue947

CSS and HTML changes to improve visual apperance of the edit profile page:
1. Moved instructional text directly above form boxes.
2. Made cancel button line up with save button.
3. Changed "label" tags to "h2" tags so that header names appear larger.

BEFORE: 
![edit_profile](https://f.cloud.github.com/assets/954858/2368950/aac58bbc-a7c4-11e3-88b9-048b98b635a9.png)

AFTER:
![new_edit_profile_947](https://f.cloud.github.com/assets/954858/2368952/af9ab784-a7c4-11e3-87e3-189abf020196.png)