Filter the VR property combo to only show compatible entries.

Only show 16 component properties for styles that need 4x4
matrices, etc.

Change-Id: Ic4bbb8416c673fe3100b2f203aa1dac6e4771bf4
Add missing header to vtkVRUIPipe.cxx

Change-Id: I8e564b5a4b3e34c4b64c848f5ec88420fdbad092
Fix bug in VR input / role mapping.

Change-Id: Iffa91447f3e34db504e5f1e17a2c190e2aee6d84
Set event queue on connections when they are added...

...instead of during state reading. Otherwise connections created
in the GUI will deref an invalid event queue pointer and crash
the app when the VR listener is started.

Change-Id: Ic7ef1bb24a832f6a563a529a57680ccc9a844a86
Fix typo in comment.

Change-Id: If9fcaacf16ed4cf4341d0bc4b6098a2746567126
Update sample VR state file with input roles attributes.

Change-Id: Ibe731f600e3b31863eb3c8651c0e3adef4ca0b17
Merge topic 'vr-fixes' into next

d09367c Update sample VR state file with input roles attributes.
346dd1a Fix typo in comment.
8a3244a Set event queue on connections when they are added...
3d29d76 Fix bug in VR input / role mapping.
b28aba0 Add missing header to vtkVRUIPipe.cxx
7c64241 Filter the VR property combo to only show compatible entries.