Login templates

Basic blocks, specifically fully working login, registration, image, and content blocks. Specified blocks are working except for:
- I think the CSS needs moved. 
- Default fixtures.
- Tests.
- Easy to use admin.

Please review.

**Important Note**: All html is assume safe. This is probably not non-very-very-trusted user friendly.
Django does expect a HttpResponse object. I'm doing this so I can abuse stuff in the View.post(): https://github.com/DirectEmployers/MyJobs/blob/login-templates/myblocks/views.py#L27

This could probably use some documentation though.