Port of new MabMapper test suite
Merge latest Mabmapper version
Merge Mabmapper issn tests
Adapt naco_normalization to new MetaCrunch usage
Configurable log level for tests
Add missing indicators in test data
Port of the MabMapping to the new DSL and various bugfixes
Mabmapper-port: Updated dependencies (mostly stringex)

 https://github.com/ubpb/mabmapper/commit/88143ea2b621b6d9af6295ac85ca7d0199e6de50

also add rake as a development dependency to allow 'bundle exec rake'
Mabmapper-port:  Did some heavy lifting at the end of signature_search to support all journal and volume count signatures (closes ubpb/catalog#295)

https://github.com/ubpb/mabmapper/commit/a1ec850746bd41be5024155e078eb2f5a7270818
Mabmapper-port:  Make all suborders without a proper "erscheinungsform" monographs (ubpb/catalog#301)

https://github.com/ubpb/mabmapper/commit/49d583000ad39d95721f3c3331c8df44e2ffa22a
Mabmapper-port: Changed short_title_display to not display bogus titles like [Buch]

https://github.com/ubpb/mabmapper/commit/ce048015babb2971d4dafd04563b8357dd7d8dcf
Mabmapper-port: Changed superorder_display to not display anything behind a ':'

https://github.com/ubpb/mabmapper/commit/806dc9a27b0dbad2d2a4b45ea927eee59520917d
Mabmapper-port:  Make some regex voodoo to cleanup superorder_display.label without loosing important infos, which are now stored in superorder_display.label_additions (ubpb/catalog#303)

https://github.com/ubpb/mabmapper/commit/a146e2f7b720c2a7bb17c1dafc4ca4d0c8a53b91
Mabmapper-port: Do even more voodoo to detect multiple superorder_labels mab fields (one starting with '...') and choosing the right one (closes ubpb/catalog#304)

https://github.com/ubpb/mabmapper/commit/cccd05e1c128d2bcbcf36bebbce2c090757ac284
Mabmapper-port: Nur löschen wenn alle Standorte == Detmold

https://github.com/ubpb/mabmapper/commit/065193b30c880de0c96537ca8f4ae81fb0638a80
Mabmapper-port: creation_date kann mehrfach (pro Exemplar) vorkommen

https://github.com/ubpb/mabmapper/commit/8b47221a164ce72343810e7ab3bd3f79ecd2b3ea
Mabmapper-port: Tests für creation_date

https://github.com/ubpb/mabmapper/commit/483b4c1ea5f94bbef1ddf9e801800ad343e62898
Mabmapper-port: Added title_sort field (ubpb/catalog#302)

https://github.com/ubpb/mabmapper/commit/e75d94f30fe3b0859482cc134eba18836ee0d6d9
Mabmapper-port: Replace short_title 'Hauptbd.' with superorder title

https://github.com/ubpb/mabmapper/commit/67d70c0931c3a66c33ff7ad777d12224541c6497
Mabmapper-port: Felder wie 370 können mehrfach vorkommen

https://github.com/ubpb/mabmapper/commit/6efbd86a4bba8f9d467d8f5facd3566edb04e202