Cache global container stack
Cache global container stack

We'll need it multiple times. Could be a bit faster.

Contributes to issue CURA-2785.

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