- Added 8x3x2 tank
- Fixed 4x3 coal facades

- Added auto-filling of weight boxes upon BP completion. To function a special Weight Storage crate (in crates group) needs to be present and filled close to the BP building spot.

Existing BPs need to be re-saved for this to work.

Added a tender tank for a Shay.

- Added 2 sizes of coal bunkers.
- Fixed inconsistency in capacities.