system time, automatically sync it
if GPS time is more than 1 hour different than the system time, show a
"SYNC" button that will sync it if pressed
- + stacked notifier, with stacked modal dialogs
- (notify sms received during phone ringing during alarm)
- + aux acks the topmost dialog
- + custom ringtone per every notifier (stops ringtone of modifier below,
- saving the time offset of playing so it can be reloaded and resumed)
- - notify sms
- - notify incoming call
- log
- flash aux when there are unacknowledged log entries
- write data to disk as log happens (to have at least partial logs if power
- more detailed GPX data (dop, elev..)
- message (structured) (json?)
- turn on/off gsm
- - play ringtone when someone calls (not useful to pick up, but just to
- notify a call is there)
- (but stop ringtone if aux pressed in the meantime, to avoid annoying
- people)
- pick up phone call
- phone call applet (pushed when picking up)
- buttons for dtmf