Bug 10036 - adding header search to additem page

Bug 10036 - adding header search to additem page

The add item screen lacks a header search form. This patch adds the
cataloging header search include to additem.tt.

To test, apply the patch and add items to or edit items of an existing
record. The header search form should appear with options for cataloging
search and circulation.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Jonathan Druart <jonathan.druart@biblibre.com>
Signed-off-by: Galen Charlton <gmc@esilibrary.com>