Code made pep8-complaint.

Sorry
====
Right off the bat I would like to apologize for the numerous mistakes I've probably made in the pull-request part of this pull-request. It is my first, you see =)

I've done a bit of work on bravo, which sums up to:
* Made it more or less PEP8-compliant. Fixed about 1500 PEP8 errors. 406 remain, according to ___flake8___
* Removed unused code in `run_benchmarks.py` (I think it was unused, you best check. I sure  couldn't find out what it was for.)
* Added a total elapsed time to `run_benchmarks.py`
* Made all .py files executable. (Note for some unknown reason, ___nosetests___ don't run tests on executable files per default, to fix it simply add "--exe" to it.)