This is to make some room for embedding the color scheme editing back in
the options dialog.

Also, the background color of the list now gets synchronized with the
text background color. This is to make the bottom of the list look
nicer.

Only connect in restoreSettingsImpl() not in the constructor.

Not finished 100%

Enough people want that, and it's not much code.

Task-Nr: 254138

Task-number: 244831

Reviewed-by: Jens Bache-Wiig

Commit ac8e3714 did reorder the path list in
ProjectWizardPage, while ProjceFileWizardExtension still assumed
that the list displayed to the user is exactly the same as passed
to ProjectWizardPage.

The patch removes the index based communication between the
classes altogether and directly stores the ProjectNode in the
UserRole of the ComboBox entry.

Now the foreground color, background color and the font of different
color scheme categories are displayed directly in the list.

Makes everything look a lot nicer. :-)

Reviewed-by: hjk <qtc-committer@nokia.com>

Merge-request: 543
Reviewed-by: dt <qtc-committer@nokia.com>

...thus enabling dumping of it in CDB.
Reviewed-by: hjk <qtc-committer@nokia.com>