BiBer1992: Implemented account for Hagen (Konto+Verlaengern)
(cherry picked from local next_rw)
BiBer1992: new Mülheim/Ruhr (Search+Account experimental) and
Lahr/Schwarzwald (Search only)
Merge pull request #131 from ruediger-w/release-2.0.7-rw

Added 2 BiBer Libs: Mülheim/Ruhr and Lahr/Schwarzwald
Added account support for Hagen