Build #863o to Live

A small patch to fix some issues that were found in the major build last week.

Build #863o on LE (openbeta)
- Trade stores are now available in locked regions, regardless of other locked industries.
- Trade Stores bought as Single Stores within Docks/Ports now work properly.
- Trade Stores being bought as "Single Stores" display with a different background.
- A duplicate industry error has a fix.