Merge branch 'dev'
Merge branch 'dev'
Enh: avoid sending to many vehicles to an unvisited station

Don't count the station as unvisited if it hasn't yet a cargo rating
but a vehicle is already on the route to visit the station. Otherwise
vehicle by vehicle is sent while the first is still on the way.
Merge branch 'dev'
Merge branch 'dev'
Revert enhancement
Merge branch 'master' into avoid_vehicle_rush
Merge branch 'dev' of https://github.com/jamesra/OrdersAI.git into avoid_vehicle_rush
Enh: avoid a rush of vehicles to stations with low rating

If the service rating is below min. rating and not enough supply, score
is increased to attract new vehicles but to avoid that more and more
vehicles get order to visit that station, score is decreased by every
further vehicle sent to that station.
Merge pull request #5 from chr7/avoid_vehicle_rush

Avoid vehicle rush