refactor code

  + convert tabs to spaces
  + upgrade jQuery to v1.9.0
Merge branch 'develop' of https://github.com/Deutsche-Digitale-Bibliothek/ddb-next into develop
Translations from DDB are added to the messages.properties and
messages_de.properties
A testing controller / external configs
Merge branch 'develop' into DDBNEXT-9
Left bar + top bar