Bug 22445: (follow-up) Use CSS to set a max-width for images - OPAC

Bug 22445: (follow-up) Use CSS to set a max-width for images - OPAC

This patch adds some CSS and markup to OPAC templates so that custom
cover images have a maximum width of 140px (to match the width of
generated local cover image thumbnails). This prevents oversized images
from displaying inconsistently compared to images from other services.

To test, apply the patch and regenerate the OPAC CSS. Post an oversized
image which corresponds to a record in your OPAC which can be added to a
user's checkouts and to a list.

View the following pages to confirm that the image displays well:

 - OPAC search results
 - Bibliographic detail page
 - Shelf browser
 - List contents
 - Recent comments
 - "Your summary"

Sponsored-by: Orex Digital
Signed-off-by: Hayley Mapley <hayleymapley@catalyst.net.nz>
Signed-off-by: Hugo Agud <hagud@orex.es>
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Michal Denar <black23@gmail.com>
Signed-off-by: Kyle Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Martin Renvoize <martin.renvoize@ptfs-europe.com>