Merge pull request mickem#405 from axolsson/master

Update to new OP5 logo

Fixed installer UI (and writing installer keys)

filters: Fixed mickem#412 show-all overwrites top-syntax

bumped version

check_drive_size: Addded letter filter keyword with is the drive letter 

mickem#399.

Merge pull request mickem#402 from Tontonitch/patch-1

New year in changelog

Merge branch 'master' of https://github.com/mickem/nscp

changed sphinx for mkdocs

Potential fix for getting averages in check_network

bumped versions