Extended & Streamlined Production [UPDATED]

This mod is the updated version of "Extended & Streamlined Production" by the user, Seppiya.
All credits go to them for the original idea and execution.
Original mod: https://steamcommunity.com/sharedfiles/filedetails/?id=914816993

Version 1.0
- Changed the factory_gridbox background to better fit the increased amount of factories.
- Changed the production entry for railway guns because the game uses a shared ui element with the normal production lines.