Add index page back in to use for forum setup.
Change index redirects and login action

The initial "login" to slack validates the ownership to a forum
before going on to slack automatically.
Multiple forums to 1 slack account n:1
Make sure users pull the correc team

When a user switches slack accounts make sure the correct
team gets set. Still having issues if a user registers
multiple forums and switches between slack accounts. Need to
tie all accounts under 1 user then reference teams.