Second round of bugfixes!
Bugfixes:
- Fixed an error that occurred when a soldier working on the "Deliver Message" project was wounded or collapsed
- Fixed an error that sometimes occurred when a soldier collapsed while the project window was open
- Fixed an error that could occur when allied troops had a start area in battle that was destroyed by artillery
- Fixed two constructions that didn't provide a movable area (and were therefore useless)
- Fixed collapsed soldiers still being visible in the trench phase
- Removed a non-existent historical tooltip
- Fixed some typos