included most of today's comments: remaining issues - Sasha's bridging lines in introduction, Alberto's PDFk and Entropy, addition of extra strengthening paragraphs before the sessions, inclusion of Graeme's grammar, adjusting PDF universality

git-svn-id: https://svnsrv.desy.de/basic/h1fitter/trunk@1536 b2a8d302-ca0a-427a-b7b9-081adbce06bc