D28573: Add 16px System Settings icon

[Nathaniel Graham]

ngraham accepted this revision.

REPOSITORY
  R266 Breeze Icons

REVISION DETAIL
  https://phabricator.kde.org/D28573

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