Fix removing currency on death
Move the player's max level to a config file

Use `max_level=` in `engine/stats.txt`. The default is still 32.
Merge pull request #780 from dorkster/level_max

Move the player's max level to a config file
Improve error message for PowerManager loading powers
Define maximum level by xp table size instead of parameter
Merge pull request #775 from dorkster/bugfixes

 Fix removing currency on death
Merge pull request #782 from stefanbeller/improve_error_message

Improve error message for PowerManager loading powers
Merge pull request #783 from stefanbeller/maxlvl

Define maximum level by xp table size instead of parameter
Fix crash caused by #783

(I should really test these things before merging)
Merge pull request #119 from clintbellanger/master

merge from master
Increase power limit
fix merge conflicts