prepare listrecords for open aire and make openAireRecord read setting from property file

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

...rc/main/java/info/textgrid/middleware/OpenAireRecord.java

...info/textgrid/middleware/RecordListDelivererAbstract.java

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

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

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

...webapp/src/main/webapp/WEB-INF/oaipmh.textgrid.properties