Manure Heap small v1.5.0.0

Description

This is the dung heap only in a small way from the standard game, for people who play on small farms.

Version 1.5.0
Now the walls are also tight and the manure no longer slides through.

Thanks to SunnyStar who brought it back to me properly ingame so that everything works.
The small manure heap is available as a silo and as a silo extension.