allow vorgangPIN to be changed on Vorgang page

includes:
- UI and backend logic
- adjustment to `NameItemEditor` to disallow deletion

src/lib/server/vorgangService.ts

@@ -236,13 +236,15 @@ export const vorgangPINValidation = function (vorgangToken: string, vorgangPIN:
 };
 
 /**
- * Rename Vorgang
+ * Change VorgangName or VorgangPIN
  * @param vorgangToken
  * @param newName
  * @returns {int} number of affected lines
  */
-export const renameVorgangByToken = function (vorgangToken: string, newName: string) {
-	const renameSQLStmt = 'UPDATE cases set name = ? WHERE token = ?';
+export const updateVorgangAttrByToken = function (vorgangToken: string,
+											newName: string,
+											column: string) {
+	const renameSQLStmt = `UPDATE cases set ${column} = ? WHERE token = ?`;
 	const statement = db.prepare(renameSQLStmt);
 
 	let info;