Improved research and economy

Changes
- Enabled more research
- Reduced number of serfs at start to 10
- Implemented stages for lumberjacks, farms and fields
- Reworked smith and workshop UI
- Regions next to conquered region get reveald (with FoW)

Fixes
- Capital hint was hidden
- Main menu was wrong for some resolution
- Cancelation did not work
- Resources scouting still showed question mark
- Conquered regions immediatelly fell back to old owner