Refactor Allies 01 objectives code
Refactor Allies 02 objectives code
Refactor Allies 03 objectives code
Refactor Allies 04 objectives code
Refactor Monster Tank Madness objectives code
Refactor Soviet 01 Classic objectives code
Refactor Survival 01 objectives code
Change some Destroyed checks to IsDead checks
Adjust CountdownTimerWidget's red-white time threshold to 60s
Add dynamic heights for things in the objectives panel.
Sort/remove usings
Merge pull request #3372 from ScottNZ/missions

Mission objectives refactoring