Different units in harvest yield sections

[HenriKajasilta]

Description:
The "Yield, total dry weight" and "Carbon (C) in yield, total" are asked in kg/ha, but "Yield, total fresh weight" is asked in t/ha. This might cause some confusion when filling in the information.

Proposed solution:
Not yet decided, but perhaps all the fields could be in t/ha, since people have a tendency to report the fresh yield in tons.

Images:

[HenriKajasilta]

If there are old json files with old units, it can be confusing when changing the units at this point.