#824: Added update on tendenci update
#871 - Article categories/search not working
template tags update to use AnonymousUser if user is not passed in for performance reason
#872: Profile export to function like membership
#150: Weekly Event view in Events app
#864 - News Images sometimes don't Show Up on HPM
version bump 5.1.311
#829: Added social_media core addon
Merge branch 'master' into bixly-testing