remove "Warnings" about creating documentationf from vm.txt
add "[float]" before 4 level topic "==== topic ===="
Remove chromium from include.

The reason is: Chromium couldn't be installed from CD or DVD disc.
Add note to Driver Saga about log messages in systemd
Update information about NetworManager

This update add 3 screens and some text.
  Now there's no "help" button so i add some
  information about "how to use NetworkManager".
Merge branch 'master' into simply-linux

Conflicts:
	admin-basics/driver-saga.txt
	desktop-software/internet/web/index.txt
	system-management/network/networkmanager.txt
Add new NetworkManager screens
NetworkManager text reformatting.
Merge branch 'master' into simply-linux

Conflicts:
	system-management/network/networkmanager.txt