Bugs fixed:

* [#3503] Auto Workbench dupe bug (asie)
* [#3500] Rare division by zero error on world load (asie)
* [#3498] Refinery deletes insufficient input fluids for non-standard refinery recipes (asie)
* [#3496] Crafting Table IV rendering crash (asie)
* [#3307] Auto Workbench not reacting to item insertion correctly in all cases (asie)