adding permissions to the users
checkout the permissions.

adit i think in permissions in every class it should b obj.owner as i'm
defining obj.owner in views and also defining owners in serializers.
Anyways i tried testing it but couldn't test it properly. So please have
a look once
ignore .db files
adding permissions
tagged permissions with views
merged arora to master
Merge branch 'aayush'
corrected conlficted merge at login.html, urls.py, forms.py