[modules] baro ets start delay
[modules] airspeed ets start delay
[rotorcraft] check_in_flight without RC

Closes #464
Changes to make ARDrone2 SDK fly without joystick
Still needs to be properly solved as per issue #201
[conf] update example sessions for ARDrone2

Removed Logitech Joystick because users are not going to have it and it will cause error messages when they launch it.
Adding notes in Wiki on how to add joystick yourself.
We now only need one session for ardrone2
[release] v5.0 stable version
Updated to newest locm3
Updated luftboot to get support for stdint types only.
Removed usage of the kernel style int types.
Merge pull request #466 from esden/locm3_stylefix_update

Locm3 stylefix update
[dox] doxygen file header fixes
[conf] add pcre lib to NPS

For some reason this needs to be explicitly specified for Ubuntu 13.04,
while it was working without it on 12.04.
[rotorcraft] add missing include so stabilization_attitude_euler_int can be used standalone
[rotorcraft] settings and rough example for float ahrs/stabilization
[ground_segment] add joystick hat to input2ivy

You can use the Hat<Position>(<hat_name>) function to trigger events,
where <Position> is one of
Centered/Up/Right/Down/Left/RightUp/RightDown/LeftUp/LeftDown

Only one hat can be used, but the interface will allow multiple ones in
the future.

closes #460
[nps] make radio_control type datalink work
[conf] update xbox and sidewinder joystick examples
[peripherals] mpu60x0_i2c: only copy ext data if i2c_bypass is false
[imu] fixes for imu_drotek_10dof_v2

- fix copying of unscaled gyro/accel data
- make i2c addresses of mpu and hmc configurable
- change orientation so z-axis is down when chips face up: define IMU_DROTEK_2_ORIENTATION_IC_UP
- silence some warnings
[fix] Yaw command was overwritten by trim.
[fix] logging wrong channels