Full XML Build - not fully variable-ated

Entire Stupeflix video XML generation now complete.  All sections done.
A few sections retain hardcoded test values, some have real values.

Split XML gen into 2 classes; ListingVideoProducer has the logic, will
do the extraction of data from Listing / ListingFile s ,
StupeflixXmlBuilder just does the grunt work.

Test now will not run; connection to mySQL server required and failing.