* 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)
* bumped version name to 0.72b
* more diagnostics in music handler (should help to catch the reported bug with not playing main menu theme)
* probably fixed problems with horde buildings in towns that start with upgraded dwellings (0.72#1 http://vcmi.antypika.aplus.pl/forum/viewtopic.php?t=159)
* version set to 0.72
* integrated save format version to the CLoadFile
* fixed problems on entering non-number as resolution number
* minor improvements
* fixed slider behavior when showing less maps/games than available slots
* added a few missing sounds for creatures
* fixed problems with artifacts info caused by bug in serialization
* fixed bug in Scholar's serializetion
* all stacks features will be serialized (should fix problems with missing premies from artifacts)
* proper serialization of HeroBonus, fixes some problems/crashes
* resource silos won't give resources on the first day
* fixed problems with removing artifacts when all visiblebackpack slots are full
* Mines / Resource Silos won't give income in the first turn
* Double click on hero slot during stack splitting won't crash
* Fixed problems with updating buttons / minimap
* fixed a few includes paths
* it's possible to enter Tavern via Brotherhood of Sword
* fixes for statusbar
* fixes for townlist
* fixed crashes on building / clicking some buildings
* bumped version number to 0.71c
* bonuses from wearing more than one same artifact won't cumulate
* Altered probabilities of starting with 1/2/3 stacks (according to Zamolxis tests)
* fix compilation min/max (windef.h is somehow included and it has its own macros min/max)
