Fix warnings of broken glossary terms

Only the first item in the glossary list is defined
as a reference for linking, at least in latexpdf.

Change-Id: I99d3cd910db8a906f762eba0dc0905047ad2b52d
Generate svg diagrams with graphvizx

Change-Id: Ifb13eb00bf8e3be0cbfc289d20af51fae18f7ed6