Some minor Pipe content render improvements
Remove SideOnly in PacketPayload

SideOnly should only ever be a last resort.
Fix Iron Fluid Pipe rotation
Merge remote-tracking branch 'upstream/mc16' into mc16
Quartz Fluid Pipe Texture Change

Changing the texture back to how it should be on the quartz fluid pipe,
now that the iron fluid pipe texture is also corrected.
Iron Fluid Pipe Texture Update

Darkened the iron fluid pipe's coloring to match the iron item pipe's.