ToER update 2019.1.8

ToER 2019.1.8 update includes:

1. When building long fences, it won't contribute to large number of sounds being played in the soundscape at the same time.
2. It is now possible to rotate fence when only one piece is attempted to build.
3. When creating units very quickly, buildings will now wait until blocking units will move away and give space to new units to spawn.
4. Wizard shall now walk in his lands all the time.
5. Improvements that workers would not get stuck when collecting resources.
6. Units shall now avoid trees and rocks more properly when there is large number of units in the scene.
7. Diplomacy texts should no longer overlap when switching between different dialogs.