- First line should end with a period
- No blank lines allowed after function docstring
- 1 blank line required between summary line and description
- 1 blank line required before class docstring
- Multi-line docstring closing quotes should be on a separate line
- No whitespaces allowed surrounding docstring text
- One-line docstring should fit on one line with quotes
- Use r""" if any backslashes in a docstring

- Fix regression introduced by issue #528 fix (pointless-statement).
- 'netifaces' is a dependency of 'zeroconf==0.17', so the check is
  redundant.

glances_globals <-> glances_logging

- fix help screen
- whitespace before ‘:’
- missing whitespace around operator
- function name should be lowercase
- class names should use CapWords convention
- fix various misspelling