Change log 0.5.9C

Improvements
- If a villager is ordered to construct a building and the building is constructed by the time the villager reached the building the villagers will now look for nearby buildings that needs construction when reaching building
- Villagers who have constructed a building will in addition to looking for other buildings to construct in close proximity now also look for buildings that need repairing
- Villagers who has repaired a building will now look for other buildings in close proximity to repair as well

Bug fixes
- Fixed that Watchtowers could only be damaged by ranged units from below
- Fixed a bug that would happen if placing a building on a top of a villager harvesting a resource that was destroyed by the time the villager moved off from the building
- Fixed that a player who turned into revolter and had villager production paused would continue training villagers trained by error, and this would eventually cause a crash
- Fixed a crash that could happen when attack moving
- Fixed a problem with group leader pathfinding that would cause the game to crash