For the beta release, removed duplicate and import material.
For the beta release, removed duplicate and import material.

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