Using new establishmentMeans causes "distribution:invalid" warning on GBIF

[peterdesmet]

The checklist taxa get a distribution:invalid tag on GBIF (e.g. https://www.gbif.org/species/134086869). We have to figure out why.

[peterdesmet]

Issue repported at gbif/portal-feedback#562

[peterdesmet]

@qgroom, so... establishmentMeans values are actually verified by GBIF and have to be one of these values: http://rs.gbif.org/vocabulary/gbif/establishment_means.xml (= the required data type).

If a value fails it gets distribution:invalid and the establishmentMeans info is not available via the API, which is the case for all our values (like escape:horticulture). We of course want to update that controlled vocabulary, so these actually represent a pathway (like escape:horticulture), but it seems that 1) that will generate some issues for the validation of all data currently out there and 2) might take a long time to implement.

What do we do in the meantime?

1. Leave that value empty and add it as descriptions (in which we can be freeform)
2. Be fine with not being able to pull that info from the GBIF API until the whole vocab has been ratified and implemented?

[peterdesmet]

Opted to leave the establishmentMeans values as is: so these will still create a distribution:invalid flag -- which should remind us that this is still a vocab implementation issue at GBIF (+ also recorded at gbif/portal-feedback#562)

In order to be able to access the pathway information already via the GBIF API, it is now also added in the Description extension: see #40

@LienReyserhove issue can be closed once dataset is republished and we have tested API.

[peterdesmet]

Now solved. The original example at the beginning of this issue no longer exists (because we have updated our taxonIDs), but see e.g. https://www.gbif.org/species/141265785.