Multilingual ingest

[Kxka]

Link to Github issue or other discussion

#259
mjordan/islandora_workbench_integration#40

What does this PR do?

Allows creating translation content/taxonomy terms from workbench

What changes were made?

Updated url logic to add langcode prefix to url for update and update_terms tasks, if langcode given in csv.
e.g. https://islandora.dev/it/islandora/manoscritti-letterari

How to test / verify this PR?

• Changes for workbench integration here needs to be pulled. Or module from here needs to be added and enabled. Module is needed as Drupel currently does not have translation support for PATCHES using REST API.

• Content language and translation needs to be enabled. Languages that are used (Chinese Traditional and Italian used in given sample csv) needs to be added.

• Create content and taxonomy terms first, then use update to create translation content and update_terms to create translation taxonomy_terms (node_id and term_id needs to be manually changed for tests files). Include langcode in header and give langcode e.x. it (italian), zh-hant (Chinese Traditional).

• Translated content/taxonomy terms should have same ID number as original with different translation language to verify creating translation stubs is working.

Interested Parties

@mjordan_

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Checklist

• [✔ ] Before opening this PR, have you opened an issue explaining what you want to to do?
• [✔ ] Have you included some configuration and/or CSV files useful for testing this PR?
• Have you written unit or integration tests if applicable?
• Does the code added in this PR require a version of Python that is higher than the current minimum version?
• If the changes in this PR require an additional Python library, have you included it in setup.py?
• If the changes in this PR add a new configuration option, have you provided a default for when the option is not present in the .yml file?

[Kxka]

Commands to run:

Create
./workbench --config multilingual_tests/create_taxonomy.yml
./workbench --config multilingual_tests/create_content.yml

Update
/workbench --config multilingual_tests/translate_terms.yml
./workbench --config multilingual_tests/translate_content.yml

[Natkeeran]

Tested this, and adds translations as expected.

Please note that changes to islandora_workbench_integration is needed because Drupal still does not fully provide multilingual support via REST (https://www.drupal.org/docs/8/core/modules/rest/translations, https://www.drupal.org/project/rest_translation). The functionality basically checks if the incoming request is a patch and has a $language code, then adds a translation entry if needed.