Update the Lumina system tray plugin a bit (getting it ready for full window replacement - not just window embedding), while here also fix the window resizing issues (now they will auto-match the icon size) and get rid of the spacing between items so that it looks a bet better (even if the background transparency still is not working yet).
Also bump the Lumina version up to 0.4.0, there has been enough changes recently to be worthy of a small bump (add the second .0 to the version so we can do smaller version number bumps from now on without breaking backwards version comparisons).
Merge branch 'master' of github.com:pcbsd/pcbsd