defaultAnno: added dummy method
Merge branch 'develop' into feat_genericElementHandling

:q
props: added skip default annotation
issue skip default annotations solved
various: changed tests, added javadoc and corrected property text
namespace_option: added retrieveNamespace method
namespace_option: implemented method
app: deleted handling from endElement
genericElementHandling: added generic_struct method
genericElementHandling: added properties for generic_span and generic_struct
genericElementHandling: removed adhoc debugging
genericElementHandling: SSpan methods added
genericElementHandling: added unit test for generic spans
genericElementHandling: added xml-file for generic span unit test
genericElementHandling: enhanced unit test for generic spans