D18675: Use different "None" item icon in grid view KCMs

[Björn Feber]

GB_2 edited the summary of this revision.

REPOSITORY
  R296 KDeclarative

REVISION DETAIL
  https://phabricator.kde.org/D18675

To: GB_2, #plasma, #vdg
Cc: abetts, ngraham, #vdg, kde-frameworks-devel, #plasma, michaelh, bruns