Add RSVP questions page to volunteer signup flow
moving Role to flat file.  Adding roles to VolunteerRSVPs

renamed volunteer_rsvps to rsvps

bunch of spec fixes for volunteer rsvp
fix glass regression
[#42866617] Change devise session timeout from 30 minutes to 2 weeks
Moved EventOrganizers into Rsvps where role is Organizer
[#42866617] Change "lots o' minutes" to 2.weeks, bro.
Merge pull request #97 from eanakashima/master

Change length of devise sessions from 30 mins to 2 weeks
moving teaching and tang from profile to RSVP
Improving the event organizers destruction migration
Users can select which sessions they're attending when RSVPing for an event.
users should only be able to edit their own profiles