Disable add/insert/remove container
Disable add/insert/remove container

Since we want to have a fixed list of containers in the stack.

Contributes to CURA-3497

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