Data for campaign win/loss conditions. All campaigns should now have
correct conditions.
All custom conditions are now validated using schema.

Note that some of scenarios may not work due to instant win/loss, mostly
because some placeholders fail to import (Mantis #1643)


git-svn-id: http://svn.code.sf.net/p/vcmi/code/trunk/@3695 4dfc6b2a-8b31-0410-aa91-d6c70e3ac834