NetworkManager is enabled and active after 2nd stage. bnc#808039
Updated changelog.
Merge remote-tracking branch 'upstream/master'

Conflicts:
	package/yast2-installation.changes
Merge pull request #28 from mchf/master

NetworkManager is running after stage2
- always return boolean from DeployTarImage (bnc#804293)
- make the "Check drivers" error message depend on control.xml
  variable (fate#312875, bnc#805251)
- 2.24.0