Log Message:
deforaos-panel: update to 0.4.0

Changes since 0.3.6:
- Default to Gtk+ 3 (like libDesktop)
- New applets: leds, suspend, and shutdown
- Documentation for settings(1)
- Extended applet API
- Fixes to the cpu and wpa_supplicant applets
- Support for FreeBSD in the swap applet