(z9999+) Default loading time for old vehicles 1000 ms

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6885 8aca7d54-2c30-db11-9de9-000461428c89
(z9999+) Display correct maintenance

git-svn-id: svn://tron.homeunix.org/simutrans/simutrans/trunk@6886 8aca7d54-2c30-db11-9de9-000461428c89