Note: If you are compiling with 4.6 but running against 4.7 then this
will result in a slightly buggy line edit.
Reviewed-by: Friedemann Kleint <qtc-committer@nokia.com>
Use QGridLayout to align header label and QStackedLayout for the pages
(in code, as it is not available in Designer).
Derive new class FilterLineEdit for filter widgets based on a modified
version of FancyLineEdit and use that in settings.
Rubber-stamped-by: con <qtc-committer@nokia.com>