D8232: Add option to center shadow

[Marco Martin]

mart added a comment.


  i would love that

REPOSITORY
  R31 Breeze

REVISION DETAIL
  https://phabricator.kde.org/D8232

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