Added/changed:
- Optimized info overlays rendering
- Added status "Resources are on the way" for construction
Fixed:
- Workers overlay didn't show teachers
- Minor UI corrections
- Crash on load in some cases
- Mysterious symbols on number inputs
- Construction workers were a bit too chaotic
- Fallow field could be still plown from last year in spring
- Cartwrights could steal horses from saltworks
