Emergecy fix makePrivCryptor.
Merge pull request #602 from Renelvon/master

Emergency fix makePrivCryptor.
Add pylint to test requirements.
Do not clutter output with files that are OK.
Check python files against pylint.

* Just flag errors for now.
* Ignore warnings, conventions, refactors and fatals.
Disable flake8 for now.
Select a sensible format.
Fix format strings. (E1305)
Fix logging format strings. (E1205)
Fix importing names from absent modules (E0611).
More specific imports fix many E0602.
Ignore some errors for now.