Bootbox popups now working
Alerts, etc. now seem to be working properly
Restricting user matching in invitation to friends
Merge branch 'refs/heads/hotfixes' into Channels

Conflicts:
	app/controllers/invitations_controller.rb
	app/models/user.rb
Fixed friends/channels search to be case-insensitive
Allowing channel match to get any channel, not just those subscribed to
Fixed bug preventing selection of images when capturing recipe; also, now properly translating :alert flashes to "alert-warning" for Bootstrap
Merge branch 'refs/heads/hotfixes' into Channels
new channel takes any primary tag by default
Channel and user getting successfully saved
Channels now being edited and saved correctly
Polymorphic controller for channels working
token_input_field working in initial test
token_input_field working in navbar
token_input_field now subsumes taggable_field, including in taggable_div (NB TESTING REQUIRED!!)
taggable_div works with feed editing
taggable_div (and all taggable_field-s) have auto-labelling
taggable_div works for all usages