Merge pull request #145 from BlackSEA-/master

virt-wrapper:add patch
qtractor version bump
xfce4-theme-manager multiple settings GUI's for setting the theme, one for the window border and one for the controls/icons and neither include  thumbnails
xfce4-composite-editor simple GUI to control the various Xfce4 WM tweaks that are not available via the Window Manager Tweaks control panel
Merge pull request #147 from groni/master

qtractor version bump