removes gem-based bootstrap, better to use JS library or CDN
removes attendance
Removes unused models, consolidates static items into pages
Adds InvitationResponses scaffold
Adds invitation response and attendees scaffold
Removes old models and schema
sets up relationships and defaults
deletes unneeded scss
Updates nav links
Refactors nav for responsive
Adds some angular
Revert "Adds some angular"

This reverts commit f4539d7dec6f70ff112d3e0330d19309d7a8cf1c.
Refactors forms for rsvp and attendee
Applies bootstrap grid to new invitation form
Adds a little styling to RSVP form
 Adds an explanation label to rsvp form
Adds intro page slider content
Modifies rsvp form position
Styles rsvp detail summary
Modifies attendee form