copied code from weekday-schedule into correct spots of flight-id-builder.  working now exclusively on flight-id builder.  using weekday schedule only as reference.  included fixme's (there's still quite a few) where things needed to be better understood and/or entered differently.  left weekend code blank with a fix me note -- once I have the weekday section finalized it will just be a copy/paste to get the weekend section into flight builder, the only difference from the weekday section being which CSV file it pulls from.

once flight builder is finished I have to touch up the flight class (add custom functions for decrement/increment seats, and for searching flights to make routes (recursive Join?).

also, current CSV seed data loaded to group files is pre-adjusted for time zone.  Need to determine if that is necessary (it's an easy fix whatever we decide).

https://app.asana.com/0/19128794071925/19594215856460