added n-triples mime type
moved export to ref controller
added skos collections to rdf export
Merge branch 'master' into export_fix
tweak syntax
remove deprecated .all terminator
eager load notations
updated to rails 4.1 (including dependencies)
Merge branch 'master' into export_fix
deactivated turn to fix test environment
locked authlogic
adapted new activerecord association preloading
fixed further activerecord association preloading
Merge branch 'master' into export_fix
fixed concepts json representation
fixed eager loading of hierachical concepts
merged master branch
fixed flash messages
fixed error messages helper
added possibility to run integration tests separately