Fix indenting tabs -> spaces
Fix indenting tabs -> spaces

Contributes to issue CURA-695.

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