Code clean up.
Completed ELFIN XML <=> Scala serialisation process.

Configured and used http://scalaxb.org tool to generate 
ch.bsisa.hyperbird.model.geoXml.scala file containing complex 
classes based upon geoXml.xsd and associated 
ch.bsisa.hyperbird.model.proto.geoXmlProtocol.scala file used
by scalaxb.scalaxb.scala objects.

Implemented ElfinXmlSerialisation test suite using Spec2 to 
check no information loss occurs. More tests must be included 
in that test suite.
Prevent test/results to have data added to git.