Contributor affiliation does not change

[briri]

If a contributor identified by 'john.doe@somewhere.org' is created by a DMP, the record is created with their current affiliation (assuming one was supplied).

If a subsequent DMP is created and a contributor identified by 'john.doe@somewhere.org', but with a different affiliation, then the system picks up the one from before and does not update the affiliation.

We need to decide on one of the following:

• Stop recording the contributor's affiliation. That piece of information is variable (as is their give/sur name). We are capturing the 'Funded affiliation(s)' which may be enough.
• Update the uniqueness validation so that the key is on affiliation_id + email/orcid so that we would have 2 separate contributor records in the above example.
• Update the affiliation. This would mean however that when someone views the first DMP in the above example they would see the user's affiliation from the second DMP.

@mariapraetzellis do you have a preference? We need to weigh out the pros and cons

[briri]

Remove the uniqueness validation check on contributors to allow mulltiples. Need to consider/evaluate the association to the orcid identifiers.