* remove custom field lowercasing
* don't allow custom field form to submit duplicate field
* remove unused
* update custom field tests
* also keep upper case when editing
* show key in UI
* also kep upper case when creating a new field
* fix test
* allow old forced case keys to stay as is
* allow space
* add extension to import
* supply initial key to CustomFieldForm
* refactor: improve element contrast
* refactor: style and composition
* consistent use of `customFieldLabelToKey`
* fix CopyTag
* remove log
---------
Co-authored-by: arc-alex <ac@omnivox.dk>
Co-authored-by: Carlos Valente <carlosvalente@pm.me>
