Bug fixes

• Changed form element attributes used to define the ticket field for extra form elements.
• Added optional caching of results from API calls.
• Added kernel test for basic form usage.
• Added service to wrap the Zendesk API client, so it can be mocked in tests.
• Added paragraphs behaviour plugin to show the Zendesk form.
• Added note about block needing to be updated for Drupal 8.
• Updated module for Drupal 8.

Remove class per https://www.drupal.org/project/ngrok_drupal/issues/3079365

- Updated changelog for beta4 release.
- by joachim: Removed Mollom integration, as the module is unsupported and the Mollom site no longer available.
- Do not submit empty field keys to Zendesk. This will omit empty input field values from the post to Zendesk.
- Update changelog.

New Features:

• Checkbox to know when group content alias is custom.

Fixes:

• Error on login page redirect when there is no default domain.

Fixed #3079245

Fix:

• #3079120 by gillesbailleux
• Fix ajax bug of empty values
• Fix snippet display bug when creation node
• Clean code