==================
- Removed file cms/utils/compat/type_checks.py, use django.utils.six module instead
- Removed file cms/utils/compat/string_io.py, use django.utils.six module instead
- Removed file cms/utils/compat/input.py, use django.utils.six module instead
- Use PY3 from django.utils.six instead of PY2 from cms.utils.compat to check Python version
- Staticplaceholders have not their own permissions
- Apphooks support now nested namespaces
- Apphooks can now exclude module for page permission checking
- fixed the permissions for plugins on apphook pages
- Allow the use of custom admin sites that do not reside under the 'admin' namespace
- Added django 1.7 migrations
- updated docs
- slots for placeholders can now be 255 characters long
- Plugin pool initialises incorrectly if database is down during first request
- some refactoring and simplifications