Editor: Replace "Scroll" check box in Book records with "Book Type" combo box.
We currently have a check box to indicate whether a book is a scroll or not. I consider this unintuitive and propose to replace this field with a combo box which shows the entry "Book" or "Scroll" respectively. This may also come in handy in the future -- in case we allow an arbitrary number of book types.
(RM-3748 from redmine: created on 2017-02-13 by Martin Otto, , closed on 2017-02-15 by Martin Otto)