Kallithea CI

[Dominik Ruf]

I agree the most valuable thing would be to have an windows build machine.

But I think having a page that indicates the current state would be 
valuable to. For example I did not know that ALL the tests pass on Linux.

I ran the tests on windows and a lot of them failed. I fixed a few 
https://bitbucket.org/domruf/kallithea/commits/a006c82e5ad9298147aca21ac1e
fe7bf17b5c867 but I'm far from done.