Phase 2 of new config support

- struct _eeprom_cfg updated
> added WING_MODE WING_USE_DIPSW as an option
> changed RATE_MODE_STICK_ROTATE to enum instead of bool
> changed INFLIGHT_CALIBRATE to enum instead of bool
> removed vr_notch[3]
> added vr_gain[3], -128 means use POT, -127 to 127 means override

- one-wire serial library
> padded ow_msg to accommodate new ver cfg larger than existing one
> fixed minor issue in send response: should be cmd |= 0x80 instead of cmd != 0x80

- FlightStab.ino
> removed cfg.vr_notch[]. TODO figure out how support cfg.vr_gain[] on stick configs
> create local wing_mode. if cfg.wing_mode is WING_USE_DIPSW, then local wing_mode is set through DIP sw.
> default cfg.vr_gain[] is -128 (use POT)
> default cfg.rate_mode_stick_rotate is disabled
> default cfg.inflight_calibrate is enabled
> improved initial eeprom cfg/stats handling. stats was not updated in all cases (ie. if reset by program box)
> support vr_gain[] override

- Aquastar.ino completely revamped. now supporting the following:
. device status,
. cfg.wing_mode,
. cfg.mixer_epa_mode,
. cfg.cppm_mode,
. cfg.mount_orient,
. cfg.stick_gain_throw,
. cfg.max_rotate,
. cfg.rate_mode_stick_rotate,
. cfg.inflight_calibrate,
. cfg.vr_gain[0],
. pid_param_array_rate,
. pid_param_array_hold,
. eeprom actions