1. Added multi-button routine to idle loop to handle purge and menu. B2 for menu broke purge functionality; so made menu a multi-button entrance too.
2. Removed autoCarbonator catch code and made into separate file, currently unused;
1. Fixed vicious bug in carbonation timer. AGAIN, had to do with trying to divide integers and get a float. Must convert ints to floats BEFORE doing arithmetic on them.