Bug 22950: Markup error in OPAC recent comment template

Bug 22950: Markup error in OPAC recent comment template

This patch makes minor corrections to the template for the OPAC's
recent comments view. These corrections fix errors returned by the HTML
validator.

The patch moves some inline CSS into a class in the global OPAC CSS.
Some minor reindentation has also been done, so use diff with the '-w'
flag.

To reproduce the problem you should have the 'reviewson' system
preference turned on, and your system should have one or more
approved comments. View the "Recent comments" page in the OPAC. Run the
page through the W3C validation service: https://validator.w3.org.
Either by pasting in the URL for the search results (if web accessible)
or by viewing source, copying, and pasting into "Validate by Direct
Input."

This patch addresses one specific error:

 - "CSS: font-color: Property font-color doesn't exist."

To test, apply the patch and rebuild the OPAC CSS
(https://wiki.koha-community.org/wiki/Working_with_SCSS_in_the_OPAC_and_staff_client).

Try again to reproduce the validation errors. Those errors should no
longer be present. There should be no visible change to the page.

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>
(cherry picked from commit 457000102e7e2228c6bd834283a9e58f32bb2104)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>