Bug 28180: Reintroduce and adjust Baker and Taylor

Bug 28180: Reintroduce and adjust Baker and Taylor

Test plan:
1. Turn on BakerTaylorEnabled and fill BakerTaylorUsername/BakerTaylorPassword (if you don't have, ask me)
2. Display the cover images in the gallery

Sponsored-by: Gerhard Sondermann Dialog e.K. (presseplus.de, presseshop.at, presseshop.ch)
Signed-off-by: Rasmus Leißner <rasmus.leissner@solutions-factory.de>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>