ignore values over 24

i don't care if you want to make godzilla, the engine doesn't support units
over 24 voxels high. i appreciate that you modders want to push the limits,
but they're called limits for a reason.
GraphsState: tidy a bit

- postpone scaling by last month only ...
Merge branch 'master' of https://github.com/SupSuper/OpenXcom into oXc_kL

Conflicts:
	src/Savegame/BattleUnit.cpp