Feature Request: Enable continuous update also in "normal" shopping list mode

[schnillerman]

It seems that continuous updates / sync with the server are only activated with shopping mode active inside shopping list view.

In my personal opinion, continuous sync makes sense also without shopping mode active since shopping lists might be processed (during shopping) by someone else even while administrating the list.

Also, adding items to the list while someone else is shopping should be synchronized immediately (but this is already implemented I think).