Deprecate pqSpreadSheetDisplayEditor and pqTextDisplayPropertiesWidget
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
pqSpreadSheetDisplayEditor and pqTextDisplayPropertiesWidget are old style display panels. We need to upgrade both of them to use the new Properties panel infrastructure.
Basically getting rid of pqStandardLegacyDisplayPanels class an all iclasses it creates/uses. ParaView should not use legacy display panels anymore.