Bug 18466: article requests box outline in opac

Bug 18466: article requests box outline in opac

To test:
1) apply patch
2) ensure ArticleRequests is set to Enable
3) sign in as a user with no article requests on the OPAC side
4) click the 'article requests' tab & see the box & message

Sponsored-By: California College of the Arts
Signed-off-by: Marc Véron <veron@veron.ch>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 736afd6d0119304df3ec61e01e275aea1645e7ac)
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>