added a root_level argument to show_sub_menu
added some tests for root_level in show_sub_menu
a better docstring for root_level
updated docs
Fixed #1348 corrected page_language_url on non CMS managed urls

The language chooser wasn't translating the urls on non managed CMS
views. simple_language_changer was deprecated since now that's the
default behavior.

Added the base 2.4 release notes.
Added IN DEVELOPMENT for the release notes and explained the deprecation warning for simple_language_changer
Fixed page_language_url for subpages in apphooks

There some leakage in the tests, running them in different order changes
the outcome.
Passing the context instance as object rather than dictionary
Passing the current_app parameter to the rendering methods
Setting the current_app on the context based on the page reverse_id and the app_name attribute of the CMSApp instance
Adding applications to the urlconf using application and instance namespaces
Correcting a bug in the AppRegexUrlResolver in order to support nested resolvers
added a root_level argument to show_sub_menu
added some tests for root_level in show_sub_menu
a better docstring for root_level
updated docs
nephews argument for show_sub_menu
resolving merge conflict
speed up of menu fixtures for tests.  why go back to the db when create_page returns the page object.
changed api so root_level is the level you start at, not after