Dan Albert 8bd00bf450 Move mission type compatibility to the target.
This was also needed in other parts of the UI and is easier to implement
in the target class anyway.

Note that DEAD is now properly restricted to air defense targets.

Also added error boxes to the UI for when planning fails on an invalid
target.
2020-11-16 21:11:14 -08:00
..
2020-10-24 13:06:37 -07:00
2020-10-31 19:55:26 -07:00
2020-11-15 22:08:18 -06:00