Redo the User and UserProfile model

[ChetanKhanna]

Currently the User and UserProfile models are poorly linked. When creating a new user from the admin panel we first have to create a user, then go to UserProfile model and create one there. Also, there are repetitions of fields in User and UserProfile models. For a more neat way to handling them, refer the TMS repository.

However changing them can be a bit tricky. A lot of code might have to be modified. For example, u = request.user, followed by UserProfile.objects.get(user=u).name will become request.user.userprofile.name. Such changes will be there everywhere.