FIX: Module reporting XML schema errors

[carlwilson]

Fixed minor issues in the XmlHandler, JPEG2000 and HTML modules that meant reporting output was not valid against the schema.

• replaced the XmlHandler:cleanURIString() implementation with something less radical that doesn't produce invalid XML in testing;
• fixed badly formatted dates in the HTML module document details;
• fixed bug in the JPEG2000 module where empty CompositeLayerHeader lists were created, these fail report schema validation;
• bumped the JPEG2000 and HTML module versions and release dates;
• added fixes to test scripts for the above; and
• removed some commented out code from XML reporting module.