wrap the relator type with t() function

[wgilling]

GitHub Issue: #90

• Other Relevant Links (Google Groups discussion, related pull requests,
  Release pull requests, etc.) - internal issue with one of our client's sites

What does this Pull Request do?

It wraps the relator type in the t() function.

This allows the agent relator type and the three digit code to be translated via the User Interface translation configurations.

What's new?

A in-depth description of the changes made by this PR. Technical details and
possible side effects.

• Does this change require documentation to be updated? I really do not think so -- this likely is providing expected functionality.
• Does this change add any new dependencies? no
• Does this change require any other modifications to be made to the repository
  (i.e. Regeneration activity, etc.)? no
• Could this change impact execution of existing code? no

How should this be tested?

1. Pull this branch of controlled_access_terms into any working islandora site
2. Configure that site for multiple languages.
3. Add or edit any Islandora object to have at least one Linked Agent field.
4. Provide a translation value for that relator type and three digit code, for example "Author (aut)" to French would be "Auteur (aut)". NOTE: attempting to provide a translation ONLY for the relator type without the three digit code does not seem to work.
5. Select the secondary language to view that item and see that it is translated as configured.

A description of what steps someone could take to:

• Reproduce the problem you are fixing (if applicable) -- simply view any Islandora Object that has a linked agent in a secondary language -- and attempt to provide a User Interface translation for the relator name at /admin/config/regional/translate.

[rosiel]

Oh wow is it hard to sort through docs about drupal 7, 8, and 9.

OK, i think this will do it. (🤯 ). You need the third translation module, "Configuration Translation," enabled. And you have to do it on a new site (e.g. branch of the starter site)

(I didn't translate the content, sorry, ignore the title)

But for existing sites, I'm not sure what kind of schema updates are necessary. @adam-vessey might know?

btw i found the "cheatsheet" and this page really interesting: https://www.drupal.org/node/1905070

[wgilling]

Oh my goodness. How could this even work? 🤯 Seems that it is using a different kind of magic by addressing configs somehow, but I won't be able to test this approach for a little while.

[wgilling]

This is failing due to the schema for this field -- update from string to label perhaps. See:

controlled_access_terms/config/schema/controlled_access_terms.schema.yml

Line 117 in 9598fca

type: string

[wgilling]

Thanks to Rosie's PR, this pull request should be revisited and potentially change the commit message at least.