don't call page layout style 'CSS', but rather 'Complex'
support for extra @rend attribute (from Lou)
rethink the way makeDescription works, and change some test results as fallout

the template makeDescription was called often. now re-expressed as a
function. take the opportunity to make the teito* scripts support a
--lang switch, and remove a file (odds.xsl in common) which is folded
into functions.xsl and teiodds.xsl