D14975: Don't use obsolete QRectF and QAbstractItemModel functions

[Dag Andersen]

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

REVISION DETAIL
  https://phabricator.kde.org/D14975

To: dcaliste, leinir, danders, #calligra:_3.0
Cc: anthonyfieroni, Calligra-Devel-list, cochise, vandenoever