[0.17.x] Better item/ghost handling with new toolbar

[irbork]

The new system is nice but a bit hard to use. It is not optimal that ghost building with no items has to be switched on in the settings menu. It is also annoying that when you will run out of an item it switches automatically to ghost building and does not allow placement of newly crafted items.

There are 2 solutions:
1 - easy, but not optimal - when cursor is in ghost mode it will go back to normal mode as soon as more items will be available for use;
2 - best solution in my opinion - there is no need for any settings in the menu, if you do not have item in the inventory and pick it from the toolbelt, you will pick up normal item with 0 quantity value, if you try to place it you will get message "insufficient items", when new item is available the number rises and the items are redy to place, and if you want to place ghosts you just use SHIFT.

What do you think about this?

[<NO_NAME>]

I like the second solution. It would also prevent form placing ghost by accident which is annoying when you don't have robots yet.