add picker for return date
fix for from
Merge remote-tracking branch 'origin/develop' into 272-return-trip-needs-a-date-selector
wait until after the default values have been itialized to setup the pickers
prevent date older than pickup date
switch to the next day if the +2 hours goes past midnight
Merge pull request #144 from CG-CamSys/272-return-trip-needs-a-date-selector

272 return trip needs a date selector