added BufferingXMLEventReader to peek to the next elements
Merge branch 'feature/wcsCapabilitesResponseFilter-184' of github.com:lat-lon/deegree-securityproxy into feature/wcsCapabilitesResponseFilter-184
added javadoc and tests
filter by sub element
Merge branch 'feature/wcsCapabilitesResponseFilter-184' of github.com:lat-lon/deegree-securityproxy into feature/wcsCapabilitesResponseFilter-184