no certificate check in update google maps version

closes #772
[rotorcraft] add speed sp to GUIDANCE_H_REF_INT message

closes #763
[rotorcraft] use roll/pitch RC deadbands in attitude mode
[rotorcraft] guidance_v: only limit throttle if RC ok

This fixes failsafe if no RC or joystick present.
Thanks to evandersman
[flight_plan] Flight plan for indoor optitrack system
[conf] ardrone optitrack tuning
[ground_segment] add a video synchronizer tool

A tool to replay a video of a flight in sync with the replay of the log.
Closes #770
[airframe] Added exapmle Bumblebee Lisa/M 2.0 frame as promissed on Hak5.
[airframe] [bumblebee] Added some more comments and modules one might want to use in the bumblebee example airframe file.
[navigation] precision route fix
Merge pull request #775 from EwoudSmeur/route_precision

[navigation] precision route fix
[papgets] add exponentiation operator to papgets