Bug 24433: OPAC account page no longer asks for confirmation before deleting hold

Bug 24433: OPAC account page no longer asks for confirmation before deleting hold

This patch restores markup added by Bug 21870 and subsequently removed
accidentally by Bug 21772. This allows the OPAC user summary page to
display a confirmation dialog before deleting a hold.

To test, apply the patch and  log in to the OPAC as a user with holds.

 - On the "Your summary" page, click the "Holds" tab.
 - Click the "Cancel" button next to any hold.
 - You should see a modal dialog asking for confirmation, showing the
   correct title.
 - Test both the "Yes" and "No" actions.

Signed-off-by: Maryse Simard <maryse.simard@inlibro.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>