fixed resurrection lel

- fixed nasty typo about casting periodic spells
- fixed krolm casting lunord or helia periodic spells :P
- fixed spell cast on dead heroes

converted some hardcoded values to expressions.

These expressions allow to override some ai behaviour in quests. Like forbidding ai to build markets or to begin spellcasting at certain day.
the expressions are located in game_globals.gpl

fixed rare resurrection bug when mausolem was destroyed while resurrecting
fixed custom strategies bug when palace was destroyed while casting spells

- Added new custom strategy! Basically more spell casting after day ~60 and if ai has >100k gold.

- increased reward for ai attack flags.
- lowered delay before removing flag that can't be accomplished
- removed general housing from attack flag target list
- extortion adjusted
- increased max number of marteplaces and posts from 5 to 7

More info about new custom strtategy in the topic.

fixed rare resurrection bug

- Added resurrections from mausoleum
- palace revenue max increased from 300 to 1000
- increased houses spawn. By default they spawn for every 4 hero.
- some minor changes

forgot to comment out debug log.

some small adjustments

- improved extortion
- reduced general houses spawn by 4 times
- added offence with lighting bolt for ai
- some other fixes

added third version FFA