integrate range finder into fw landing
add missing $ in rcS script
Merge remote-tracking branch 'upstream/master' into fw_landing_rangefinder
set range finder to disabled as default
fw landing: do not use relative altitudes in TECS
fix comment for FW_LND_RFRALT
QU4D startup script
mc_att_control: MC_YAWRATE_MAX parameter added
Use "POSCTL" switch name consistently
ALTCTRL/POSCTRL renamed to ALTCTL/POSCTL
sensors, commander: code style fixed
sensors: commented "offboard" switch removed
Merge pull request #920 from PX4/posctl_cleanup

Modes names cleanup
Reporting cleanup, use different variables for different state switching results to avoid being tripped on local / global name scope
manual_control_setpoint: comments fixed
rc_mode_switch diagram updated
manual control setpoint: rename variables
commander: use new manual control setpoint variable names
fw att control: use new manual control setpoint variable names
fw pos control: use new manual control setpoint variable names