PageAttribute template tag is now an 'AsTag', meaning its output can be stored as a variable.
updated test case for page attribute template tag.
Update settings.ADMIN_MEDIA_PREFIX to settings.STATIC_URL
Update settings.ADMIN_MEDIA_PREFIX to settings.STATIC_URL
fixed #931, admin ChangeList super() doesn't propagate request
Add link target support

Possible targets:
same window (<<empty>>)
new window (_blank)
parent window (_parent)
topmost frame (_top)

Credit to bendavis78 for implementation, this commit just generalizes.
Add tests for LinkPlugin
Translate the copied language plugin also. This is needed since the string cannot be translated (ugettext_lazy) in the settings.py file.
tweak the clean_overwrite_url method to check that page.pk is not the page.publisher_public_id
Establish a way of ensuring the X-CSRFToken header is only set once for jQUery AJAX requests
added extra tests showing the bug
fix show_placeholder
added documention for upgrading from 2.1.3 to 2.2 and from django 1.2.5 to 1.3
fixed typos and added links to other sections and django docs
lazy loading of the menu on page change list
cleaning up some commented code
moved js into change_list.js
show move target on descendants if needed
removed setting CMS_LAZY_LOAD_MENU
changed Load_nav to descendants