Bug 11819 - Don't show catalog edit menu if user has no edit permissions
Currently if the logged in user lacks any cataloging permissions the
bibliographic detail page (catalogue/detail.pl) still shows the Edit
button, but with an empty dropdown menu. This patch corrects the toolbar
include so that the button will not appear at all.
To test, view the biblio detail page as a user with various combinations
of the following permissions:
The edit button should appear with the correct set of links when the
user has any combination of the above permissions. If user has none the
button should not appear.