embargo and description

[ingrre]

The data provider filled in "embargo: false", but field in KGE is empty.

The description is also not necessary and should be removed, as this should be extracted by the curator from the data descriptor.

[eapapp]

The embargo (accessibility) field import to the KG is now fixed.

We should give this more thought at some point, since now only two of the four possible values can be added via the metadata wizard (controlled access and restricted access are not available there). Not sure what the difference is between those two, would it not be enough to have one for the HDG @ieaasebo @UlrikeS91? Or do we also intend to host, but never make available, non-anonymized human data as "restricted access"? (What would the point of that be?)

The dataset summary is addressed in two other issues (#1 and #7), so I'll leave it out of this one.