Fix void declaration
Revert
Initialize YarpImageOf for depth and video frames
Merge branch 'openni2' of https://github.com/kt10aan/yarp into openni2

Conflicts:
	src/modules/openni2/OpenNI2/OpenNI2YarpDeviceServerLib/OpenNI2SkeletonTracker.h
Resolve conflict
Rearrange methods
Merge branch 'openni2' of https://github.com/kt10aan/yarp into openni2Test

Conflicts:
	src/modules/openni2/OpenNI2/OpenNI2YarpDeviceServerLib/OpenNI2SkeletonTracker.cpp