px4io driver: publish input_rc even if RC connection has been lost
px4io: do not include failsafe condition into rc_lost flag
rcS: removed unnecessary sleeps, minor code style fixes
navigator: use vehicle_status flag to decide if global position is valid
'signal_lost' flag added to manual_control_setpoint and rc_channels topics to indicate signal loss immediately
sdlog2: added 'signal_lost' logging
sensors: use enum for switches position and -1..1 for values in 'manual_control_setpoint' topic
commander, navigator: use updated manual_control_setpoint
mc_att_control, mc_pos_control: update manual_control_setpoint usage
fw_att_control: update manual_control_setpoint usage
sensors: publish last valid manual control values when signal lost
sensors: switch position reading bug fixed
Move Pauls EKF into a class and instantiate only when / if needed. Checking for low memory conditions as we should.
Removed a bunch of commented out things that we will not need any more.
Reduced the number of states to 10 to avoid killing the logging system
Bump RC timeout for all cases to half a second
Merge pull request #796 from PX4/rc_timeout_fix

Bump RC timeout for all cases to half a second
Merge branch 'master' into mpc_local_pos
Create EKF object in right context
position_estimator_inav: reset position estimate when GPS becomes available