Installed a few bug fixes and changes, required a reset of the campaign
- Fix bug with plane transfers: FW-190 were always lost
- Limit rate of repair of buildings. Too fast repair allowed bombed hangars on airfields to be fresh and new the mission directly after they were destroyed.
- Add Ju52s in the initial state of the campaign. Previously there were none. After some time new ones were produced, but they should be there from day 1.
- Let factories pick a different plane model after finishing a batch. Without that, it was possible to end up in a situation where only model of fighter was ever produced.