Deposits can be renamed to something other than the item they produce

[goldenarrow]

So, still with my farm deposit (see #440), it'd be nice if I could produce milk churns from it. But at the moment if I do that, it calls the deposit "Milk churns".

I've had to rename the milk churn item to "Dairy Products" so it doesn't look weird having a grassy area called Milk Churns.

[andrewpey]

Done in 0.82