make custom fields case sensitive (#1242)

* 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>

apps/server/src/api-data/custom-fields/customFields.validation.ts

@@ -1,4 +1,4 @@
-import { isAlphanumeric } from 'ontime-utils';
+import { isAlphanumericWithSpace } from 'ontime-utils';
 
 import { Request, Response, NextFunction } from 'express';
 import { body, param, validationResult } from 'express-validator';
@@ -9,7 +9,7 @@ export const validateCustomField = [
     .isString()
     .trim()
     .custom((value) => {
-      return isAlphanumeric(value);
+      return isAlphanumericWithSpace(value);
     }),
   body('type').exists().isString().trim(),
   body('colour').exists().isString().trim(),