Trying to make milk or cream with the biogenerator while its container is full no longer uses any points and gives an error message instead.
Removing an unused var and argument. Container now checks if there's enough space to hold all the reagent.
* Trying to make milk or cream with the biogenerator while its container doesn't have enough space no longer uses any points and gives an error message instead.

* Remove an unused var and argument.
Merge pull request #5494 from phil235/BiogenFullFix1

Biogenerator container fix