Use zones to restrict range of crafting tables

[stefanstr]

It occurs to me that the new zone system could be used instead of (or in addition to) the radius when determining the allowed resources for a crafting tables. Typical uses: make stoneblocks only from rubble found inside your mountain base. Or: make art only from materials found in a given stockpile.

[ciditi]

This could be good, but there'd need to be checkbox or something for allowing global range, otherwise you'd have to zone the entire map for every workstation put up.  Or maybe make it selectable so that you can either choose to use a zone to constrain or use the radius, that way you could leave the 999 range in if you wanted.