A small hotfix that fixes currently encountered problems.

Added:

• The tooltips of the buildings now show requirements that may not yet be fulfilled when upgrading
• The inhabitants no longer run in circles at the start of the game

Fixed:

• The buttons in the diplomacy menu work now
• The buttons in the writing room work now
• Fixed a bug in the pathfinding that could lead to a crash
• The scroll sensitivity of the resident menu is now higher
• The recruitment button in the overview menu is now activated when the keep is built