Show volunteer & student RSVP counts separately on checkins page
Show total session RSVPs alongside checked in counts on checkins page
Tweak checkins page JS
Only use RSVPs from the same course when carring over data to new RSVPs
Hide 'auto arrange' button for past events
Apply default paragraph styles to event details div

Previously, if the simple_format parser didn't create
a wrapping paragraph for a given line, the font size
and line-height would differ from other paragraphs on
the page.

Fixes #281
force_ssl in production
Rails 4.1.7

Update other non-controversial gems
Turn off force_ssl in config, do it in controllers instead

This allows disabling it for JSON endpoints like /all_events.json
Hide 'other skills' on profile entirely if not present

bump up some gems
Bootstrap 3 upgrade

* Change column classes to be all that 'col-md-n' business instead of 'spanN'
* Change modals to have some extra classes
* Plop in the new simple_form_bootstrap wrapper stuff
* Start restyling event/rsvp forms