Filter BookStack requests #38
Description
Block and somehow display a message telling the user to go through the shelf:
/books/[a-zA-Z0-9-]+/permissions/books/[a-zA-Z0-9-]+/page/[a-zA-Z0-9-]+/permissions/create-book
Make sure these still work:
/shelves/[a-zA-Z0-9-]+/permissions/shelves/[a-zA-Z0-9-]+/create-book