Bug 27873: Improve message consistency: checkout and patron detail pages

Bug 27873: Improve message consistency: checkout and patron detail pages

This patch creates a new include for showing circulation and
patron-related messages on both the checkout page and the patron detail
page. This allows the two pages to be consistent with each other.

The patch also makes some minor CSS adjustments, including the addition
of an SVG to replace an old GIF, arrow-bullet.gif.

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

- View both the checkout and patron details page for patrons in the
  staff interface, confirming that the information is displayed in the
  same way, including:

  - Pending modifications
  - Pending expiration
  - Expired
  - Address in doubt
  - Card lost
  - Restricted (indefinite and with expiration)
  - Outstanding overdues
  - Outstanding return claims
  - Patron age incorrect for their category
  - Outstanding charges
  - Account credit
  - Waiting holds (at logged-in library or other library)
  - Circulation note (from borrowers.borrowernotes)
  - Messages (added at logged-in library or other library)

EDIT: Fixed merge error.

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>