Bug 27445: OPAC header tweaks for non-JavaScript users

Bug 27445: OPAC header tweaks for non-JavaScript users

This patch makes some minor changes to the header menu in the OPAC
visible only to users with JavaScript support.

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).

 - View the OPAC with JS disabled in your browser.
 - The "Cart" button should not be visible.
 - The "List," "Log in," and "Search history" links should be styled
   blue like other links.
 - Log in to the OPAC and confirm that the "Welcome <name>" link is also
   styled like other links.
 - Enable JavaScript and verify that the links appear and function just
   as they did before the patch.

Signed-off-by: Lucas Gass <lucas@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>