Redirect: remove in_sitemap checkbox in admin
Six/Future upgrade
setup.py: make sure six is installed
More future.utils.six replacements
bugfix: fix TranslationDoesNotExist error during model save

This could happen when a fallback language didn't exist,
the private `_translations_cache` could be filled with a dummy marker.
Fix tests, pages without fallback not not get fallback URLs

AttributeError: 'NoneType' object has no attribute 'rstrip'
in `_update_decendant_urls`
Fix test_move_root() test, caused by cached values.

AssertionError: u'/root2/level1/' != '/level1/'
Improve intro-page for empty sites
Improve example templates and developer-base template.
Make sure pages created via an API always have a slug
Merge branch 'django17'
setup: bump packages to latest bugfixes and Django 1.7/Python 3 versions
Fix running tests in Django 1.7 (not all pass yet).

- add proper defaults for MIDDLEWARE_CLASSES
- delay app_directories loading
Restore 0013_allow_nulls_in_cached_url.py

was lost with django17 branch merge, which renamed migrations -> south_migrations
The file was created in 5db650d2c6a6d2dd1004cb0a4a902a39ba75fbc6
Mention South 1.0 requirement in CHANGES
Fix build for Django 1.4/1.5, get_query_set() issues.

The get_query_set() call should be used or all RelatedManager code breaks
Add comments on d4ed5cc8553cce032689f46423c72137397f7148
Added test that reveals the Django 1.4 + mptt 0.6 bug

Wanted to be sure it wasn't any other bug on our side.
Remove unused TranslationDoesNotExist copy

Can use parler.exceptions.TranslationDoesNotExist perfectly fine.
Merge branch 'master' into django17-db_table

Conflicts:
	fluent_pages/models/db.py