improved check for return time consitency (check also the trip to homeTown)
fix : acceptablePrice + parametrize the number of best solution to keep
several little fixes/improvements
fix timeslots when adding a return trip + permanence maps in Journey
fix goHome
fix refs to permanence tables + fix getFeasibleTrips
fixedDays inside Journey
add solution checkup
compute avg travel time in db and fine tuning of timeslots
little cosmetics
fix timeToComplete
new hotel data structure in DB