Created Contact Forms

Done
---------------------------------------------
- Created contact forms and added Javascript validation.
- Added the views and html for it.
- Created the required Unittests.
- Deleted tests.py from apps/main folder
- Deleted $().Carousel code from home page.
- Added request context processor to home page so as to dynamically change menu
- Added integer validation in registration page

To Do
----------------------------------------------
- Spam protection i.e. adding captcha