Re #323 - models cache is cleared at the end of ensure_completely_loaded, so as to play nice with Django 1.5.
Better explanation re #323.
Merge branch 'master' of https://github.com/feincms/feincms
Re #399 catches "%sContent" class name conflicts and produces a warning.
Pages in navigation are more rare than not, so make the default in_navigation False.
Tests: Do not register_regions in setup(), avoid "RuntimeWarning: Ignoring second call to register_regions"
Tests: We use the translation extensions, so add LocaleMiddleware to MIDDLEWARE_CLASSES. Avoids warning "feincms.module.extensions.translations:Could not access request.LANGUAGE_CODE"
Tests: Also call module.medialibrary doctests
Rename the _feincms_content_model class to prevent name clashes

Fixes #399.
Fix test_36_sitemaps
FeinCMS v1.7.2
Merge branch 'master' into next

* master:
  FeinCMS v1.7.2
  Fix test_36_sitemaps
  Rename the _feincms_content_model class to prevent name clashes
  Re #399 catches "%sContent" class name conflicts and produces a warning.
  Better explanation re #323.
  Re #323 - models cache is cleared at the end of ensure_completely_loaded, so as to play nice with Django 1.5.

Conflicts:
	feincms/__init__.py
Merge remote-tracking branch 'official/next' into next

* official/next:
  Tests: Also call module.medialibrary doctests
Merge branch 'next' into tabbed_options