Commented all controllers.
Added comments to all directive JS files
Added documentation for services
expanded comments on views.py and models.py
Documented views.py and removed urls
Merge branch 'master' into documentation

Conflicts:
	src/client/app/scripts/controllers/seller.js
	src/client/app/scripts/directives/navbar.js
	src/client/app/scripts/directives/navbarxs.js
Merge pull request #96 from rpanjwani/documentation

Pulling this in for mentors.