* all the good changes
* follows
* dont send duplicates
* remove follow_type for now
* dont add all the extra stuff we're not implementing yet
* refactor
* lots of fixes
* Delete activity.html.erb
* Delete activity.text.erb
* Update 20170209215819_create_follows.rb
* Update schema.rb
* Update mapping.rb
* Update mailboxer.rb
* feature/more.events
* keep mapping.user as the creator
* cleanup cruft and include slack notifs
* capture topic and synapse updates, store the old values
* avoid the mapping gets deleted problem
* include an indicator of which values changed
* style cleanup
* remove the hack in favor of a legit way
* updated schema file
