Plane: disable the CLI if AFS failsafe enabled on APM2

the flash space is a bit too low for both CLI and AFS
APM_OBC: added heartbeat() method

this is used for when the plane is calibrating sensors, to ensure
heartbeat is continued to the failsafe board
Plane: send heartbeat to AFS when calibrating sensors
Copter: update AC3.2-rc10 release notes
LogAnalyzer: Add IMU Mismatch check
Frame_params: 3DR_Iris+ reduced WP_NAV to 650
Copter: fix RSSI_RANGE param values

The extra .0 after the 5 was causing the mission planner to not display
5V in the dropdown even though the value was 5.
Copter: add AC3.2 default to LOG_BITMASK value
MAVLink message Handler implemented, extra protocol message created.
Merge remote-tracking branch 'upstream/master'