D8911: Port launch feedback KCM to Qt Quick and implement VDG redesign

[Eike Hein]

hein added a reviewer: abetts.

REPOSITORY
  R119 Plasma Desktop

REVISION DETAIL
  https://phabricator.kde.org/D8911

To: hein, #plasma, mart, abetts
Cc: broulik, plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, 
jensreuterberg, abetts, sebas, apol, mart