Changes

* Some minor changes in the GUI.

* Minor fixes and cleanups.

Upgrading instructions:

* Modify wpkg.js so that it exits with code 3010 when reboot is needed. Sample patches are of course welcome.

* Right now, "Help..." button in WPKG Client doesn't display any useful info. This should be fixed before the final release. If you can, please help finishing this information - it's located on http://wpkg.org/index.php/WPKG_Client_-_GUI_help