Added Weimar Uni (PICA)
Account not supported because at least the login form looks different
Added Erfurt FH, Uni, Nordhausen FH
Added Göttingen Uni, Hildesheim Uni and HAWK, Jena EAH, Osnabrück
Hochschule, Wiesbaden EBS (all PICA)
Added: Braunschweig FH, Jade Hochschule Elsfleth/Wilhelmshaven,
Hochschule Hannover
Moved ISBN and Amazon Cover related functions to a separate class, added
covers to PICA