Add variant names to extruder boxes
Add variant names to extruder boxes

In the bottom-right corner.

Contributes to issue CURA-3161.

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