Bug 11982 - Show local cover image in the intranet biblio details page

Bug 11982 - Show local cover image in the intranet biblio details page

Also, fix useless "No cover image" block when using Amazon and local
cover images at the same time.

http://bugs.koha-community.org/show_bug.cgi?id=11982
Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Tomas Cohen Arazi <tomascohen@gmail.com>
(cherry picked from commit bbb6cf94de88da46394d17a446c8906bac31af98)
Signed-off-by: Chris Cormack <chris@bigballofwax.co.nz>