Currently, if a user makes a nominal change (i.e. one that does not affect room availability, e.g. simple meeting title change), the request goes back to 'Pending' status and triggers e-mails as if it is a new request. The location admin then has to confirm it, which then triggers e-mails as if it was newly-confirmed. This is causing a lot of confusion to our users.

IDEA - The system should only change a confirmed request back to 'Pending' status if a fields that would affect a room's availability are changed. These would be:
-- Date (begin or end)
-- Time (begin or end)
-- Location
-- Number of attendees