updating settings for new 3.0 release of django cms
updtes for django cms 3.0
Merge remote-tracking branch 'origin/djcms_3_updates' into askbot
Added askbot to requirements and set django version to 1.5.6.
Merged settings and urls from askbot.
Improved askbot settings.
Changes in the Askbot configuration.
Fixed several errors and warnings.
Reordered urlpatterns.
Fixed Jinja2 issues.
Basic skin for askbot.
Created fieldsets in the allometric equation admin.