Add --reinstall to .travis
Make the edge of FNone room lit, if the cave is lit

Otherwise the rooms look like black holes.
Simplify and fix run direction change

For the cases when walls are lit, the simplificaction doesn't matter anyway.
Display run stop message also in the cases of delayed stop
Let showing of run stop messages be configurable
When starting the program, read UI config from file, not savegame

When starting a new game afterwards, the config from savegame is used.
It's different for rules config (the server config). It's loaded
from savegame when the program starts, but read from file when
a new game starts.
Let just one client rename server savefile in case of corruption