D12306: Filepicker dialog proper grid icon layout

[Nathaniel Graham]

ngraham added a task: T8552: Polish Open/Save dialogs.

REPOSITORY
  R241 KIO

BRANCH
  master

REVISION DETAIL
  https://phabricator.kde.org/D12306

To: anemeth, #frameworks, #vdg, ngraham
Cc: abetts, rkflx, ngraham, #frameworks, michaelh, bruns