Some Refactoring

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

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

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

.../target/classes/info/textgrid/middleware/OAIPMHImpl.class

...arget/classes/info/textgrid/middleware/OAI_ESClient.class

...h-core/target/classes/info/textgrid/middleware/Rest.class

...target/classes/info/textgrid/middleware/TGConstants.class

...et/classes/info/textgrid/middleware/oaidc/OaiDcType.class

...lasses/info/textgrid/middleware/oaidc/ObjectFactory.class

...t/classes/info/textgrid/middleware/oaipmh/OaiDcType.class

...asses/info/textgrid/middleware/oaipmh/ObjectFactory.class

...lasses/info/textgrid/middleware/oaipmh/package-info.class

...ources/jaxb/info/textgrid/middleware/oaidc/AboutType.java

...axb/info/textgrid/middleware/oaidc/DeletedRecordType.java

.../jaxb/info/textgrid/middleware/oaidc/DescriptionType.java

...rces/jaxb/info/textgrid/middleware/oaidc/ElementType.java

...es/jaxb/info/textgrid/middleware/oaidc/GetRecordType.java

.../jaxb/info/textgrid/middleware/oaidc/GranularityType.java

...urces/jaxb/info/textgrid/middleware/oaidc/HeaderType.java

...ces/jaxb/info/textgrid/middleware/oaidc/IdentifyType.java