Attend button now says Join the Waitlist if workshop is full
Signing up to a full event shows waitlist msg in email and flash
Add attendee role to checkins table

Also sets specific width percentages for the checkins table rows
to avoid ugliness when 'Un-check in' button pops in
Send reminders to confirmed students (not WLed)
Lurching slightly closer to student sorting

Adds handlebars_assets for backbone templates
Organizer can download student CSV
Merge branch 'student-reminder-email' of https://github.com/fionatay/bridge_troll into fionatay-student-reminder-email
Merge branch 'organizer-csv-download' of https://github.com/fionatay/bridge_troll into fionatay-organizer-csv-download
Volunteers will no longer be waitlisted when joining a full event
added course selection for organizers and students
Avoid crash by not showing RSVP actions for Meetup events

Remove obselete DISABLE_STUDENT_RSVP env var
Merge branch 'courseclasslevel' of https://github.com/Dreyfuzz/bridge_troll into Dreyfuzz-courseclasslevel