1.0.3dev: adapt tracsphinx.css to newer sphinxdoc.css (from 1.3b1)

However, as Sphinx 1.2.3 is still current at this time, keep the style
for <tt> around.

(cf. https://bitbucket.org/birkenfeld/sphinx/issue/1476/tag-is-obsolete)


git-svn-id: http://trac.edgewall.org/intertrac/log:/branches/1.0-stable@13429 af82e41b-90c4-0310-8c96-b1721e28e2e2