Seperate saltnado_websockets from the rest of the implementation.
pep8 cleanup
Make sure to not leave hanging children processes if the parent is killed
Adding 2 missing imports
misc pylint fixes (missing imports etc)

Add utils function to import faster json libaries (if you have them) and switch couhcbase_return and saltnado to use them
Merge pull request #13614 from jacksontj/saltnado

SaltAPI cleanup
Quiet two pylint errors about missing __init__ method
Fixed a boolean check that was broken by overzealous lint fixing!
Merge pull request #13620 from whiteinge/boolean-lint-breakage

Fixed a boolean check that was broken by overzealous lint fixing!
Fixing doc for ddns.absent and fixing the invalid return from ddns.absent
Merge branch 'fix-ddns' of github.com:nmadhok/salt into fix-ddns