added Document.find_or_insert() classmethod
message processing now saves topic hashtags to Recommendation.sigs
consistently display author names in paper lists on html pages
shifted Document.find_or_insert() so it can be called directly as base_find_or_insert()
made core.SIG.find_or_insert() enforce hashtag string rules etc.
switched to new SIG.find_or_insert() mechanism; topic string check; added likes.post_html() and topic2 support
adding a PaperInterest should refresh the paper page view
minor fixes to topic creation
added sort and limit support to Document.find()
got rid of unused get_or_create_person() function
switched test to use SIG.find_or_insert()
implemented simple recentEventsDeque for tracking recent events
added recent events listing to homepage
kinder, gentler messages in the test suite