D15403: {Style] Default sheets to white background

[Dag Andersen]

danders accepted this revision.
This revision is now accepted and ready to land.

REPOSITORY
  R8 Calligra

REVISION DETAIL
  https://phabricator.kde.org/D15403

To: anthonyfieroni, danders, boemann
Cc: Calligra-Devel-list, dcaliste, cochise, vandenoever