Cleanup useless files; Update gemfile
Adding initial devise configuration
Formatting javascript

- Conforms with airbnb/javascript style guide
Using to airbnb/javascript style for saving 'this'
Fixing conflicts

Conflicts:
	app/assets/javascripts/backbone/views/items/edit_view.js
	app/assets/javascripts/backbone/views/items/new_view.js
	app/assets/javascripts/backbone/views/users/new_view.js