GSoC: Scripts are (mostly) working

Looks like another week or so has ended which means a status report by me. Instead of porting Sphinx itself I took my time to port the scripts which are used to check the coding style and a couple of other things.

This means that there is no difference between developing Sphinx with 2.x or 3.x anymore as long as you ignore the errors and failures the test suite gives you when using 3.x.

There still are some problems with the reindent script which is in use. I got the latest one from the CPython svn, adjusted it a bit so it can be converted with 2to3 but for some reason it behaves differently with 3.x.

P.S.: You might have noticed that I changed the blog title, that is because I plan on publishing more non GSoC related posts and I think opening another blog is not worth it.