ImageViewToolbar : Reimplement using metadata.
ImageViewToolbar : Reimplement using metadata.

This gets us one step closer to retiring PlugValueWidget.registerCreator().

GafferHQ/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,appleseedhq/gaffer,chippey/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,chippey/gaffer,hradec/gaffer,ivanimanishi/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,ImageEngine/gaffer,appleseedhq/gaffer,boberfly/gaffer,ImageEngine/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,ImageEngine/gaffer,chippey/gaffer,ImageEngine/gaffer,hradec/gaffer,hradec/gaffer,hradec/gaffer,andrewkaufman/gaffer,GafferHQ/gaffer,appleseedhq/gaffer,andrewkaufman/gaffer,chippey/gaffer,johnhaddon/gaffer,johnhaddon/gaffer,ivanimanishi/gaffer,andrewkaufman/gaffer,lucienfostier/gaffer,ivanimanishi/gaffer,ivanimanishi/gaffer,hradec/gaffer,boberfly/gaffer,johnhaddon/gaffer,boberfly/gaffer,GafferHQ/gaffer,lucienfostier/gaffer,boberfly/gaffer,GafferHQ/gaffer