mezzanine.accounts czech translation update
Added Petr Papoušek to AUTHORS.
Merge
Added new site to README.
Added the ACCOUNTS_NO_USERNAME setting, which will hide the username field from signup/update forms, but still generate a unique username for use in profile view slugs.
Allow querystring vars to be excluded from pagination links.
Missing migration on site perms. Closes #655.
Added support for setup.py test
Pass in the user to page.get_ascendants in the page view.

This will allow previewing of the unpublished children pages of
unpublished parent pages.

fixes #653
Added www.coderaising.org to sites in README.
Merge
Added www.zigzagbags.com.au to sites in README.
Lowered MAX_POSTS_PER_CALL to 20; Added support for question/answer posts
Use a context instance when rendering page menus, huge performance boost.
Fixed rss import errors.
Fixed the igrations to be able to run with a custom user model

This uses a pattern copied from django-reversion:

https://github.com/etianen/django-reversion/blob/master/src/reversion/migrations/0001_initial.py
Add addr_bcc arg to send_mail_template

This accommodates the new setting SHOP_ORDER_EMAIL_BCC in Cartridge.
Merge
Merge
Added Andrey Zhukov to AUTHORS.