changed to urlfield
before running south
migrations for urlfield
publish_date set to null=true
changed url field
Fileformat was set to DOS for settings.py. Changed it to Unix.

settings.py fileformat was DOS, So ^M characters were showing at end of
each line. Most of us work with unix, so let's keep unix fileformat.
Added logging to test akismet
Added functionality to submit_spam to Akismet when we block a comment.

* Added fields user_ip and user_agent on Comment. This fields will help
when we want to submit_spam.
* Added migration for these fields.
* Added submit_spam() functionality when blocking comment
* Addes submit_ham() functionality when approving comment.
Merge branch 'master' into class_based_blogango
Do not have access to `request` in CBV. Use self.request