Get this applet into stock Plasma

[Gyges88]

Getting this applet into stock Plasma would imho have four benefits:

1. It would make life easier for current users of this applet upon reinstalls.
2. It would increase the discoverability of this applet through the Plasma alternatives offered upon right-clicking the original applet.
3. For VDG it would solve the issue of the "show desktop icon" living in the systray despite not really being an indicator.
4. For marketing it might be useful as this is basically the only missing feature preventing the Plasma panel from being feature-complete compared to the Win7 Superbar.