Added latest model manager
Removed unnecessary import of Item and ContentType from links app
Removed repetition of filters from summaries in activity templates
Simplified footer links
Removed unecessary typogrify filter in favor of simplicity
Removed URL entry for about in favor of a template/admin approach
Added process page as a flatpage
Added missing endfilter tag to preview templates
Added site name to title block for smarter template inheritance
Added portfolio app and updated homepage