Fix for issue 525

This is a fix for https://github.com/openscad/openscad/issues/525. It removes all of the wiki code, instead uploading test results to a a site where single HTML pages can be shared. (Currently http://www.dinkypage.com/, but I'll change it if someone has a good suggestion.)
It prints the URL for this page near the end of its output, so the test results should be accessible from Travis CI.

Example page (with completely made-up results): http://www.dinkypage.com/446606/

I have not tested this with actual test results, but it closely follows the previous version, so it should work. I don't have a non-commandline Unix machine to test on, so someone else should probably test it.