* fixed crash related to cammander's SPELL_AFTER_ATTACK spell id not initialized properly (text id was resolved on copy of bonus)
* fixed duels, added no-GUI mode for automatic AI testing
* minor things

git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3412 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834