Smooooother Drag Scroll
Oh, and RMB can be used to DragScroll on minimap, again.
Fix Quick Load without a quicksave crashing game.
Merge pull request #843 from fenyo1/smoothDragScroll

Smooooother Drag Scroll
Tweak comboboxes
fix minimap scrolling
fix autoshot centering thing
Merge remote-tracking branch 'upstream/master' into experimental

Conflicts:
	src/Battlescape/BattlescapeState.cpp
	src/Battlescape/MiniMapState.cpp

Drag-scrolling is now not broken at all and fixed in addition to being smooth! Yay!

Also, I should stop doing that thing with the globe.
Mouse scrolling still broken (maybe use the relative mouse mode instead of warping the cursor?)
Set scaling "nearest" for PCs, "linear" for Androids (will probably be made an option eventually)