2 - add "Revert Changes" button
3 - load add-ons from /boot/home/config/add-ons/DialUpPreflet
4 - move DEVNOTES into a doxygen file and document the rest of the API
5 - IPCP: check for incorrect settings (only IP addresses should be entered)
6 - PPPoE: refresh interfaces list every second or so
7 - ConnectionOptions: add field for entering number of dial retries and delay between retries
10 - (maybe) allow selecting multiple authenticators (in expert-mode)