Fix open in sublime.

> I spent two hours today with fixing this workflow completely again. I fixed a bug in proj.py, one with variable assignment in the bash script and one regarding the execution of Sublime. I had to start off with the git version though, as the other links are still not working.
 
> You can find the working version below:
 
> [http://drop.julo.ch/1X2B0H0B3U05](http://drop.julo.ch/1X2B0H0B3U05)
 
> I have only tested Sublime 3 support, because that is what I am using, but 2 should work, too.