Updated Styling, Add Profile and Messaging view, Fix Bugs, Login/Signup still broken

#### Update:
* Fix appearance of modals
* Start on responsive landing page
* Start on main dashboard
* Start on user profiles

#### Problems:
* User login/creation is broken. 
  * ![jpajxbsy08b4xt_3o7zurzj88eultrh2o29qbvqpasw](https://cloud.githubusercontent.com/assets/5567838/4056822/18260dfe-2dc0-11e4-9a00-6e6b0faae604.png) POST action is firing off, so likely something wrong in the controller.
* Main views are still broken, with static content.

#### Next:
1. Fix user login/creation
2. Start on chat feature
3. Finish the views
4. DRYing up the code
`User.where` was not returning the correct user, and allowing anything to go in the URL: `/users/<input>`

Might help: http://stackoverflow.com/questions/15185919/difference-between-find-where-and-find-by-id