LP#1234201: fix menu item to display patron requests (if summary is horizontal)

LP#1234201: fix menu item to display patron requests (if summary is horizontal)

This patch adds a missing command element to the horizontal
patron summary display so that the 'Acquisition Requests' menu
item will work.

To test:

[1] Set the Patron circulation summary is horizontal library setting
    to true.
[2] Retrieve a patron and try using the Acquisition Requests menu
    item.  It will do nothing.
[3] Apply the patch and clear cache in the staff client.
[4] Repeat step 2.  This time, the Acquisitions Request menu item
    should bring up the list of the patron's requests.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>