Changed functionality name from image2d->rgbimage
Added documentation to all recently modified files<exclamation mark>
Fixed tests for refactored package structure on source side
Fixed tests for refactored package structure on source side (forgot to git add some files)
Deleted old openni hand tracking code
Added new event for driver to manage initial state
Added method to reset cached drivers
Refactored reset to clear and rebuild cache rather than resetting the internal instances of the drivers.
Merge branch 'event_services_dev' into development