Fix the build system. Updated pro files.

Change-Id: I990d4c4630ee293ac6a1ac234066194ed81c709e
Reviewed-by: Anselmo L. S. Melo <anselmolsm@gmail.com>
Remove remaining references to QStandardItemModels

ae68129a5f3727e1b74c6de1dbc5871a8bd0a54e removed this class from UiHelpers,
because it was moved to QtGui. These tests aren't needed here anymore.

Change-Id: I4cc8fbc42377e44306ab6c58661f524a1b854a24
Reviewed-by: Anselmo L. S. Melo <anselmolsm@gmail.com>
API updates

This project was developed before the release of Qt 5.0, so some
of the APIs had to be updated in order to build again.

Change-Id: I579d7170ea0d80bd33aee29ec807461af603b0d3
Reviewed-by: Anselmo L. S. Melo <anselmolsm@gmail.com>