Macaw's Bridges

Changes :

- Some code & model optimization
- Taller Guardrails on bridges, so you can't jump off them
- Recipes in the recipe book are now grouped
- Rail bridges can now consume a redstone torch to be powered
( You can remove it by right clicking with an empty hand on it )
- Added a recipe to be able to revert stairs to normal bridges, for extra convienence

Fixes :
- Fixed render issue with bridge stairs and snow
- Fixed Bridges acting as light source
- Fixed Railbridges have a slight shading issue
- Fixed All bridge blocks that can have a torch do not consume right click action, allowing the player to then place another block in the same action