Add viewer index next to the mosquito
Add currentViewerIndex in buttleData
Assign node name to viewer index
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/data/buttleData.py
Fix bug

Fill mapViewerIndexToNodeName with None value
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/data/buttleData.py
Expose emitViewerChangedSignal function to qml
Update viewer using emitViewerChangedSignal slot

When a mosquito is dropped and when the selected viewer is modified
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop
Merge branch 'develop' of github.com:buttleofx/ButtleOFX into develop

Conflicts:
	buttleofx/data/buttleData.py