#5129 Extend export ui for remoting
merge-update of trunk and disabling GUI-Control separation
ExportManager.java: surrounded statement with try-catch block
JaxbExportWizard.java: Fixed savePath as File representation and converted it then toURI().
plugin.xml: Commented out the JaxbWizard-Menu see also #3077
Adapting to changed signature of JAXBExportConfigurator
had to rename the packages to make them compliant with buckminster