adds text as a 'Toggle Full Screen' menu item
adds text as a 'Toggle Full Screen' menu item

Contributes to: issue CURA-125

fxtentacle/Cura,totalretribution/Cura,ad1217/Cura,Curahelper/Cura,totalretribution/Cura,hmflash/Cura,senttech/Cura,hmflash/Cura,bq/Ultimaker-Cura,markwal/Cura,ynotstartups/Wanhao,fieldOfView/Cura,ad1217/Cura,senttech/Cura,fieldOfView/Cura,fxtentacle/Cura,markwal/Cura,bq/Ultimaker-Cura,ynotstartups/Wanhao,Curahelper/Cura