Update the cabal and other descriptions
Install a scores file in a new format
Remove the obsolete bot config file
Update rules config files wrt engine changes
Replace the initial high scores file after the format change
Update config and content files wrt the Quit rename in the engine
Partially mimic content modifications from LambdaHack
Denote gems by '*', since '$' is treated specially
Start the combat arena on level 3
Let the scroll of spawning work in skirmish mode, too
Rename summonning effects