D20627: Introduce CriticalNotificationType

[Kai Uwe Broulik]

broulik added a dependent revision: D20630: [Dialog] Add CriticalNotification 
type.

REPOSITORY
  R278 KWindowSystem

REVISION DETAIL
  https://phabricator.kde.org/D20627

To: broulik, #kwin
Cc: kde-frameworks-devel, michaelh, ngraham, bruns