disallow \r and \n in media filenames
use qdesktopservices on qt5+pyqt4
stop providing pyqtconfig, as it's no longer available on newer plats
use a new header key on qt5 to fix drawing bug
add houssam to about
tweak heights and font sizes
use different way of scrolling to answer to fix qt5 bug
fix tag strip on export

we must make sure to include spaces around tags or they can't be
found