QmlProfiler: Use SortedTimelineModel for paint events

Change-Id: Ib511897b5a314d36e906d7c52a09a88c281925fc
Reviewed-by: Kai Koehne <kai.koehne@digia.com>
Doc: uncommitting revisions using Bazaar

Document the new Uncommit function and the options in
the Uncommit dialog.

Change-Id: I8f1ded2a395dfa606fe9e6df79a055c4d2cba77e
Reviewed-by: Hugues Delorme <delorme.hugues@fougsys.fr>