Merge pull request #1 from reckart/dspace-3.1-dariah

M2E metadata, slf4j upgrade
isRegistered, register, cleanup müssen angepasst werden?
changed dspace.cfg
cleanup und register an dariah angepasst
dariah readme added
epic pid added
added handle configuration to dpsace.cfg
createPid v2
handle modify and view method adapted to epic pid version 2