Bug 32254: Add 'page-section' to various tools pages

Bug 32254: Add 'page-section' to various tools pages

This patch adds a .page-section div to various pages in the tools
section in order to provide a consistent page structure.

Also changed: Corrected a couple of templates which were missing some
<tr> tags.

This patch includes indentation changes, so please ignore whitespace
when looking at the diff.

To test, apply the patch and view the following pages to confirm that
the primary page content is wrapped in a container with a white
background:

- Tools -> Access files
- Tools -> HTML customizations
  - Additional contents, news or pages-- all use the same template.
  - Check the list of existing entries.
- Tools -> Batch extend due dates
  - Choose a set of criteria that will return results and click
   "Continue".
  - Check the list of checkouts to be updated.
- Tools -> Batch patron modification
  - Submit a batch of patrons for modification.
  - Check the list of patrons to be modified.
- Tools -> Upload patron images
  - Upload one or more patron images
  - Check the view of results
- Tools -> Upload
  - Upload a file and view the results, or perform a search and check
    the view of results.
- Tools -> Patron card creator -> New patron card batch.
  - Submit a set of patrons and check the display of patrons in the
    resulting batch.
- Tools -> Cash summary for <library> and Tools -> Transaction history
  for <register>
  - Confirm that the table of data looks correct

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: David <david@davidnind.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>