straightens out multiple legs toggles
again, normalizing the id structure for multiple legs containers
fixes bug in multiple legs toggle
adds routine to gather all commute legs in a collection
migrates model class field leg.type to leg.day
adds validity checks to legs collecting funtion
adds CO2 calculator function for multiple legs
adds calories calculator for multiple legs
clarified w/r day language and made index pg a bit better
removed dependency on selectboxit
updated #commute-distance
added the optional checkin questions
toggles background on commute distance
labels required fields
implements client side form validation
adds 2 more fields to survey model class
adds a simple data api endpoint
implements optional questions routine
Merge branch 'dev'