User profile is complete. Database table for Messages. Small bug fixes.

Couple of things for Shawn:
* Remove ability to remove classes under Education when vieweing a
user's profile. This should fix the error where a user who's looking at
someone else's profile can remove courses.

* Similarly, a user can remove another user's skills and interests.
SHAWN PLS

* User's shouldn't be able to edit their emails in the personal section
of the profile. This is their username and cannot be changed.

* Press enter to login in the landing page

BUGS
* dashboard_overview.html is really messed up right now. It needs to be
fixed at some point.