moved threading to new file, lots of updates to it
Added conversations, removed some old fields on messages
added some debugging output
new migrations
Changed a message to only have one conversation
made conversation creator nullable
comments
removed this, but probably should add something like it back later
better helpers on Conversation
setup_threads now does conversations

may not even need threading anymore…
something wasn't working with tos and ccs, now it is
typo in html
added basic conversation view
added clean_subject
added some helper functions to Conversation
better subject cleaning for conversations
better conversation views
better conversation views
added conversations to person view
cleaned up some helper functions

moved some work to the db