Fix explosiveEfficacy logic error
Merge pull request #847 from DarkDefender/grenade_fix

Fix explosiveEfficacy logic error
Update files
Fixes:
- Base inventory crash
- HQX crashes
- Craft soldier numbers not updating
- New battle soldiers going over craft limit
- Geoscape sidebar
Merge remote-tracking branch 'upstream/master' into experimental

Conflicts:
	src/Battlescape/AlienBAIState.cpp
	src/Engine/Game.cpp
	src/Engine/Surface.cpp
	src/Geoscape/GeoscapeState.cpp