Minors:
- By default, cmake will keep debug info
- removed warnings from adventure map infobox (part of #1636)
- adventure map infobox will refresh on artifact changes (part of #1636)
- moved terrain music files to terrains.json file
- player should act before AI in all games, not only campaigns


git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3683 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834