FIX: display of passengers that have no transfer stop defined yet

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6263 8aca7d54-2c30-db11-9de9-000461428c89
FIX: use more colors to show height levels in minimap

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6264 8aca7d54-2c30-db11-9de9-000461428c89
FIX: correctly set count of cities etc when scaling map size

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6265 8aca7d54-2c30-db11-9de9-000461428c89