[KPhotoAlbum] suggested solution to the icon problem

[Tobias Leupold]

> I have to admit I did not use resources with a cmake-based Qt project
> before. I need to take a look myself…

I only use resource files for a Windows build of one of my projects that is 
built with qmake (because with cmake, I didn't manage to build a statically 
linked Windows binary), but apparently, it's not a problem with cmake:

http://doc.qt.io/qt-5/cmake-manual.html and
https://cmake.org/cmake/help/v3.2/manual/cmake-qt.7.html