setup adheres to nupic style guide
More import cleanup
Removing defunct code.

fixes #1151
Merge pull request #1152 from rhyolight/remove-math-mcmc

Removing defunct code.
Merge pull request #1148 from rhyolight/optimize-imports

More import cleanup
Merge pull request #1146 from rhyolight/format-setup

setup adheres to nupic style guide
Merge branch 'master' of github.com:numenta/nupic into missing-json-swarming

Conflicts:
	setup.py