rename role.editor to role.contributor

[tcoupin]

IQSS/dataverse#7129

[qqmyers]

@tcoupin - trying to help clean up these old PRs. For this and your related #107 - it looks like the change in Dataverse was for 5.14, so does it make sense to update the 5.10 and 5.11 translations or should the changes go into a new 5.14 (or later) version?

[tcoupin]

I add my colleague @plecor who replace me on dataverse's subject at French IRD

[plecor]

Hi,
The key was changed in 5.14 but the issue it fixes was itself introduced in 4.20 by IQSS/dataverse#6662

The 4.20 PR renamed the role alias 'editor' to 'contributor', meaning the bundle resolutions is looking for role.contributor.name instead of role.editor.name, see https://github.com/IQSS/dataverse/blob/a57ce53c7c683d05959683de66c03199e465c2ad/src/main/java/edu/harvard/iq/dataverse/authorization/DataverseRole.java#L133

So the key role.contributor.name only exists in Dataverse since 5.14 through IQSS/dataverse#9012, but is expected in the translation files since 4.20.

This PR is on 5.10 and not 4.20 because this is the one we are working with internally.