Merge pull request #14 from vcmi/RMG

Patch integration is now complete. Some simple map objects are placed around and in general it works without crashes.
Merge branch 'develop' of https://github.com/vcmi/vcmi into RMG
- Attempt to move zones away from map boundaries
- Tweaking algorithm parameters
- Refactorings
- Implemented some really nice gravity-based algorithm
- Fixed zones placed outside the map (causing various bugs)
Make gcc happy