Gamepad controls
added: select previous target
removed gun/rocket state
fix linux compilation
dont show text when showOnHud=false
remove arrows from texture
Merge pull request #172 from voxelinc/dont_show_splitoffs_names_on_hud

dont show text when showOnHud=false
Merge pull request #171 from voxelinc/remove_arrows_from_textures

remove arrows from texture
Merge branch 'master' into controls, add some assertions

Conflicts:
	src/worldobject/ship.cpp
Merge pull request #140 from voxelinc/controls

Gamepad controls
Merge branch 'master' of https://github.com/voxelinc/voxellancer into correctly_adjust_center