deleted all SYSOs and add a test class for the DARIAH requests

...c/main/java/info/textgrid/middleware/DARIAHConstants.java

...main/java/info/textgrid/middleware/DublinCoreBuilder.java

.../java/info/textgrid/middleware/DublinCoreFieldLoader.java

...a/info/textgrid/middleware/IdentifierListDelivererDC.java

...info/textgrid/middleware/MetadataFormatListDeliverer.java

...re/src/main/java/info/textgrid/middleware/OAIPMHImpl.java

.../src/main/java/info/textgrid/middleware/OAI_ESClient.java

.../src/main/java/info/textgrid/middleware/OaiPmhClient.java

...main/java/info/textgrid/middleware/RecordDelivererDC.java

...n/java/info/textgrid/middleware/RecordDelivererIDIOM.java

.../java/info/textgrid/middleware/RecordListDelivererDC.java

...va/info/textgrid/middleware/RecordListDelivererIDIOM.java

...main/java/info/textgrid/middleware/RepIdentification.java

.../src/main/java/info/textgrid/middleware/SetDeliverer.java

...e/src/main/java/info/textgrid/middleware/TGConstants.java

.../test/java/info/textgrid/middleware/OaiPmhDARIAHTest.java

...re/src/test/java/info/textgrid/middleware/OaiPmhTest.java

oaipmh-webapp/src/main/webapp/WEB-INF/beans.xml