CLC-1452 - Canvas Conversation Activity needs to be enhanced or removed from CalCentral Activity
https://jira.media.berkeley.edu/jira/browse/CLC-1452
Merge pull request #820 from christianv/CLC-1452

CLC-1452 - Canvas Conversation Activity needs to be enhanced or removed from CalCentral Activity
NOJIRA Centralize feed date formatting before adding yet another copy-and-paste
CLC-1179 Fix Sakai announcement retraction check
Merge pull request #821 from raydavis/raywip

DRY date formatting; fix Announcements retraction
[CLC-1446] Threading activities