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)
campaign:
- new file MapFormatJson that implements small subset of Json map
format, as described on wiki
- vcmi will read overrides from file config/mapOverrides.json (currently
empty)
- Json writer for logical expressions
TODO: write data for map overrides
- removed CResourceLoader class in favor of one that implements resource loader interface
- removed global pool of files, in favour of more dynamic approach
- renamed some files to match current situation
All these changes are needed mostly for future mod manager + .zip support
