Fixes a runtime involving ZAS zones lose their air datum.  (I have no fucking idea why that happens)
Fixes #3059
Merge pull request #3068 from SkyMarshal/airfixes

Fixes a runtime involving ZAS zones lose their air datum.  (I have no fucking idea why that happens)
Fixes unticked file.

No idea why some files get randomly unticked.
Merge pull request #3070 from Baystation12/master

Updating BEF with master