D23658: Make notification icons use outline style

[Noah Davis]

ndavis added a dependency: D23627: Make notification icons use outline style.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D23658

To: ndavis, #vdg
Cc: kde-frameworks-devel, LeGast00n, GB_2, michaelh, ngraham, bruns