Current relative path resolution on template variables
(TOPDIR, CSSDIR, SCRIPTDIR, IMAGEDIR) cannot be used in css templates
which rendered css files are used on docsthemes.
This patch proposes to purposely use absolute URL paths
for publishdocs environment to prevent from side effects using
relative paths and apply the template variables to the tmpl files
which could not be applied previously by changing www-generator tool.
Also, changes doc-contrib-guide documentation properly.
Change-Id: I3ffda6cc6fa360a09dbcbba2ec924be054a88142
8640f43a6a