Merge pull request #4 from harry1989/master

Adding the express stub for files and other services and few angular changes
Visual design changes

1. New colors. Palette available here:
http://www.colourlovers.com/palette/3199475/getRTI
2. New fonts - font awesome (fontawesome.io/icons/) for icons &
inclusion of google font for body/heading text.
3. Various changes to the CSS & markup to support the new visuals
No change
Login, Signup and files pages are hooked-up. Also cleaned some commented blocks.
Added the navigation controller to show/hide login/signup/logout
Added the controllers/services to show the files in tha ng-table
Integrated the uploading of files through ng-fileupload
Added few of the services to handle the user sessions through cookies
Added utility library underscore
Upgraded to use the bootstrap 3 latest version

Reviewer: Srinivas