Silo Filltype Limiting v 1.0.1

This patch restricts the amount of fill types that may be simultaneously stored in a silo in order to make the game more realistic.
This number is raised by the use of silo extensions.
Only a maximum of four distinct fill types may now be kept in a silo. The number of distinct fill types may be expanded by two each by constructing more silo extensions.
It now works in multiplayer as well!

Changelog: – Better identification of relevant silos (now functional with "Hof Bergmann" map) Changelog 1.0.1.0
In the basic game options, you may now choose how many fill types are used simultaneously for each extension and the main silo.

Fetty42 is credited.