Copter: completely disable vel controller
Copter: remove DO_MOUNT_CONFIGURE support

The functions in the mount lib didn't work anyway
Mount: remove CMD_DO_MOUNT_CONFIGURE support
Copter: remove debug
Copter: shorten ESC calibration message
Relay: reduce num relays to 2
RangeFinder: reduce num instances to 1
Copter: ReleaseNotes for AC3.2-rc13
Copter: version to AC3.2-rc13