[conf] sort conf example and test
[optitrack] Give feedback about following drones and fix gps
[conf] stm32-upload: only verify for dfu-util >= 0.7
Merge pull request #718 from fvantienen/optitrack_fix

[optitrack] Give feedback about following drones and fix gps
[subsystem] possibility to poweron gps and imu via gpio at init

closes #706
[airborne] check ned_initialized_f in stateIsLocalCoordinateValid
[ins] alt_float: properly reset_alt_ref if !USE_BAROMETER
[ins] ins_int: INS_SONAR_MIN_RANGE defaults to 1mm
[radio_control] Workaround RADIO_CONTROL_NB_CHANNELS differs in driver and radio.h

closes #700
[simulator] pprzsim-launch: add -fg for jsbsim
[conf] ardrone2_raw: remove obsolete INS_SONAR_SENS
[conf] remove old booz2_flixr airframe
[ins] remove unused/obsolete vf_int
[messages] remove some old booz messages
[dox] fix typo
[tests] Makefile for stabilization tests
[SuperbitRF] Fixed compilation of SuperbitRF as telemetry module.
[Lisa/S] Added Lisa/S V1.0 files, and Ladybird + Lisa/S airframe file.
[LadyLisa] Initial flying version of the ladylisa airframe file.