Revert "fix some geo drag scroll stuff"

This reverts commit faec3338ef3cfef77113b961ff1b043a5c6347f4.

Conflicts:
	src/Battlescape/BattlescapeState.cpp
	src/Geoscape/Globe.cpp

Sadly, this thing breaks globe on android. Will have to look into it later.
Revert globe.cpp (for real this time)

Also, some changes to BattlescapeState.cpp are in effect, apparently (git cleanup?)
Disable page's dragging code in favor of upstream one

Add mouse (touch) scaling to drag code

Make left mouse button the default drag button for androids