login function updated
Update models.py
Update settings.py
Update base.html

logout function included
Update detail.html

only logged in user can add comment
Merge branch 'patch-8' of https://github.com/larabear/prepay
Merge branch 'patch-9' of https://github.com/larabear/prepay
Merge branch 'patch-11' of https://github.com/larabear/prepay
Merge branch 'patch-12' of https://github.com/larabear/prepay
Update detail.html

comments fixed!
Merge branch 'patch-13' of https://github.com/larabear/prepay

Conflicts:
	templates/prepay/detail.html