remove bogus space tabs
refactor and move ShipUnitTypes to the top
make this a seasonal easter egg
avoid magic numbers
use the new reinforcements methods
bring back Chinook infantry insertion
rename the boolean
paradrop zombies instead of ants
Fix mission accomplished notifications and video playback
make gdi04c a bit easier
LuaDocs spelling fixes
LuaDocs punctuation fixes
LuaDocs consistency fixes
Fix wrong changes of possessive
Fix spelling for Actor.Create description
Merge pull request #6378 from Mailaender/desert-shellmap-lua-cleaning

Desert shellmap Lua maintenance
Changed "the player" to "this player" for the mission objective properties
Merge pull request #6423 from TWaalen/upstream/fix-spelling-luadocs

LuaDocs/Desc attributes spelling fixes
Fixes that only turrets of exiting units are drawn on top of landing craft.
Merge pull request #6428 from reaperrr/landing-craft-fix

Closes #6419