Add user registration js functionality

- event listener on form submit
- post serialize data to /users
- add FormsController, Form (model), and FormsView js files
- add controllers, models, views js folders
Refactor user create js functionality

- remove all hard coded css references in code
- formscontroller now initializes form and  all view and model methods
- add "private methods" in controller
Add user#create

- on form submit a new user is created with input email
- add email to attr_accessible
Add css overlay on user submit

- Add overlay div with registration message
- Add overlay div css class in style.css
- Add user registration form action and method attributes
Merge pull request #2 from zkarst/prelaunch_setup

Complete user prelaunch registration functionality