Add some logging and documentation to XmlMaterialProfile
Add some logging and documentation to XmlMaterialProfile

Contributes to CURA-339

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