Bug 23221: Reindent tools/manage-marc-import.tt

Bug 23221: Reindent tools/manage-marc-import.tt

This patch reformats the template for the Manage staged MARC records
page. It makes only whitespace changes. It should have no effect on the
behavior of the page.

In addition to re-indentation, some lines have been broken up. These
should be the only changes highlighted when using diff while ignoring
whitespace.

To test, apply the patch and view the Manage staged MARC records page.
The page should look correct and work correctly:

 - Paging through results
 - Viewing batches
 - Cleaning batches
 - Deleting batches

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>
(cherry picked from commit cd66074205b571d1db6acbb57d8d8554d3d4fe85)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>