QtIFW

Fix c++ documentation creation. Add, fix inline documentation.

Change-Id: Idd6805afbf5736eebf03c2d1ca6dae272c519634
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@digia.com>
Reviewed-by: Niels Weber <niels.weber@digia.com>