Use a preference for the autosave delay and reduce it to 10 seconds
Use a preference for the autosave delay and reduce it to 10 seconds

It only triggers after we have stopped changing things, so having a
shorter delay is not that dangerous. Using preference as per
@ghostkeeper 's suggestion.

Contributes to CURA-511

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