Some refactoring
CamelCase HUD members
Indent initializer list
Extract VoxelFont from HUD
Merge branch 'master' into refactor_hud

Conflicts:
	src/ui/hud.cpp
	src/ui/hud.h
Make Properties camelCase
inclusion order
fixed linux compilation
Merge pull request #88 from voxelinc/refactor_hud

Refactor hud
merge with master