Add new translationMode for FCEs:
<langDatabaseOverlay>1</langDatabaseOverlay>:
XML fields are merged with default record xml row if:
<TCEforms type="array">
<l10n_mode>mergeIfNotBlank</l10n_mode>
<TCEforms type="array">
<l10n_mode>exclude</l10n_mode>
(use this for container fields for example)
Performance:
- add index to sys_language_uid and l18n_parent
e.g.
1. Fork the repository on Github
2. Create a named feature branch (like `add_component_x`)
3. Write your change
4. Write tests for your change (if applicable)
5. Run the tests, ensuring they all pass
6. Submit a Pull Request using Github