ltl2tgba.html: Provide a link to an SVG output. Suggested by Denis.
Because this means we are running dot twice, I have added a flag that will allow us to easily turn this off, should it prove too slow. * wrap/python/ajax/spot.in (output_both): New variable. (run_dot): New function, extracted from ... (render_dot): ... here. Adjust to call run_dot for all needed format. And ajust the output accordingly.