QmlProfiler: Use crisper left/down arrows for the timeline
Before they were rather blurry. The new ones are uncompressed and strictly black/transparent. Also the "smoothing" is rather detrimental in this case, so it's switched off now. Change-Id: I38fe0bf9e3420a2077b5535958053718981bce4f Reviewed-by:Kai Koehne <kai.koehne@digia.com> Reviewed-by:
Erik Verbruggen <erik.verbruggen@digia.com>

| W: | H:
| W: | H:

