Problem/Motivation
This is a follow-up to #1953568: Make the bundle settings for entity reference fields more visible..
When configuring a field (such as /admin/structure/types/manage/article/fields/node.article.field_tags) there are several form elements used by all field types (Label, Help text, Required checkbox). Some field types, such as Entity reference and Link, have additional settings. We would like to make these additional settings, when present, easier to identify.
Proposed resolution
Whenever a field type adds settings to the configuration form, wrap those settings in a fieldset.
Standardize the fieldset label.
Remaining tasks
- Add screenshots to the issue summary.
- Decide whether the wrapper element should be added by the field-type plugin or by the parent form.
- Decide on the standard label: something like "FIELD_TYPE settings" or "FIELD_TYPE options".
User interface changes
This will change the appearance of the field configuration form.
API changes
Whichever implementation we use, the documentation of the form elements returned by the field-type plugin will have to be updated.
Data model changes
None
