D9323: Use ScreenMapper everywhere as a singleton

[Laurent Montel]

mlaurent added a comment.


  Seems ok for me.

REVISION DETAIL
  https://phabricator.kde.org/D9323

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