* map should be drawn faster because empty tiles are no more blitted (according to info from .msk files) - I hope it will work correctly, if not please report or turn it off if too hard to make it work
* support for 3 new artifacts:
- Ring of Vitality
- Ring of Life
- Vial of Lifeblood
* restructures creature ability preparing (creature abilities are now loaded from cr_abils.txt file). It needs further work - all changes in abilities should be moved from CCreatureHandler.cpp to cr_abils.txt as it's done in this commit (I hope it's clear how it should be done as there is an example)