Code review comment for lp:~mitya57/appmenu-qt5/menus-and-systemtrayicons

I have just been pointed to https://codereview.qt-project.org/102386, which makes this whole branch unneeded. However it has not been merged yes, and if it is merged, in may or may not land in Qt 5.5. So let's keep my implementation until we have that new Qt (5.5 or 5.6) in Ubuntu.