Bug 36320: Clicking Edit items from catalogue/detail.pl leads to 'Add item' screen

Bug 36320: Clicking Edit items from catalogue/detail.pl leads to 'Add item' screen

This patch updates the catalog toolbar so that the "Edit items"
choice under the "Edit" menu is replaced with a new option: "Manage
items," which takes you to the top of the add/edit items page. The "New
item" menu item has been modified to add the anchor so that the link
jumps the user directly to add item form (past the existing items).

The patch also adds a "Jump to add item form" link at the top of the
add/edit items page.

To test, apply the patch and search for a bibliographic record in the
staff interface.

- View the detail page for the record.
- Click the "Edit" menu button in the toolbar.
- You should see the new menu item, "Manage items."
- Clicking the "Manage items" button should take you to the top
  of the add/edit items page in cataloging.
  - You should see a "Jump to add item form" limk under the page
    heading.
  - Clicking it should jump you to the "Add item" form.
- Clicking the "New item" menu item from the bibliographic detail "New"
  menu should take you directly to the add item form, scrolling down
  past the existing items.

Sponsored-by: Athens County Public Libraries
Signed-off-by: Kristi Krueger <kkrueger@cuyahogalibrary.org>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>