handle 2 more special cases in ingredients

[MarcusWolschon]

Add handling for 2 more classes of special cases in ingredients

[MarcusWolschon]

Is there a way to get all units and unit-aliases that contian spaces from the database?
These common cases work because of German grammar but if we could get identify the units before split() that would solve the general case.
I just don't know how.

[vabene1111]

It would be Unit.objects.filter(space=).all()

but that would mean that chaching needs to be added as every request to the ingredient parser would otherwise infer a database request against the whole set. I am not sure if this is already implemented to some degree but that is a rather large change so i would say we remove the hardcoded part from this PR, if you want you can play around with the database and if you come up with a solution that improves the results we can discuss it in its own PR, is that ok ?

[MarcusWolschon]

done