D5619: rename Desktop to org.kde.desktop

[David Edmundson]

davidedmundson accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R169 Kirigami

BRANCH
  phab/themechange

REVISION DETAIL
  https://phabricator.kde.org/D5619

To: mart, davidedmundson
Cc: plasma-devel, apol