Add HUD prototype
Merge branch 'clusterloader' into hud

Conflicts:
	src/game.cpp
	src/game.h
Add a basic crosshair
Basic static HUD with hardcoded elements
Set default FOVY to 60°
Merge branch 'linuxvm_test' into hud
Add some HUD inertia
Add movement inertia, use Properties
Squared crosshair
Use Property everywhere
add top,right,bottom,left anchorpoints
Add orientation arrows
improve arrows
Use the properites
Merge branch 'master' into hud

Conflicts:
	src/game.cpp
	src/game.h
	src/voxel/voxelcluster.h
Refactor arrow drawing
Mesa softrendering compatibility
Add some ignore files
Draw HUD without borders
Add function to add static elements