Add selection "tab" for active extruder
Add selection "tab" for active extruder

Only visible for multi-extrusion printers. Doesn't do anything but setting a qml property, but is to be used to change the variant/material per extruder, and to apply a filter to the advanced mode settings.

CURA-340

totalretribution/Cura,hmflash/Cura,ynotstartups/Wanhao,fieldOfView/Cura,Curahelper/Cura,Curahelper/Cura,totalretribution/Cura,hmflash/Cura,senttech/Cura,senttech/Cura,fieldOfView/Cura,ynotstartups/Wanhao