Add WorldObjectType
added query for ships to world
altered collisionfilter to use worldobjecttype
add spawnstate
added spawning via spawnrequest
Fix ObjectHudgetCornerVoxels::position
Merge branch 'master' of https://github.com/voxelinc/voxellancer into worldobjecttype
remove WorldObjectType
Merge pull request #450 from voxelinc/worldobjecttype

Add WorldObjectType
Merge pull request #453 from voxelinc/spawn_state

SpawnState
Merge pull request #454 from voxelinc/objecthudgetcorner_positions

Pulling this in order to "fix" target arrows
merge fix
Merge branch 'master' of https://github.com/voxelinc/voxellancer into hud_target_arrow

Conflicts:
	src/ui/hud/objecthudget.cpp
include fix from mrzzzrm