Refactored rspec for user model
functionality for admin should be able to update user_type
Refactored user model spec
added remove super admin method
Routes for remove super admin
controller spec for make admin,super admin,remove admin and super admin
routing spec for add admin and super admin remove admin and super admin
Refactored user controller spec
Merge pull request #68 from RaviShankarArya/QAUTH-42

[QAUTH_42]-->[Master] Admin able to update the user_type