Call setViewer() for all ConverterSetups when opening a BDV.
Call setViewer() for all ConverterSetups when opening a BDV.

This was an oversight from when the RealARGBColorConverterSetup
setViewer() method was moved to the ConverterSetup interface.

bogovicj/bigdataviewer-core,bigdataviewer/bigdataviewer-core,bogovicj/bigdataviewer-core,bigdataviewer/bigdataviewer-core