snark-ur5-control: SCAN action is now always acknowledged with a status code 1 and message "movement initiated", the same as auto_init command. A code 0 amd "success" is sent later when command is completed.
Revert "snark-ur5-control: added options to specify acceleration and velocity for SCAN command, added options for specifying normal movement's acceleration and velocity. snark-ur5-status: --output-samples option will output status in running mode - for testing only."

This reverts commit b7799a2d41fc01f17fa01a1bffa882df699605d5.
robotic_arm/simulink: new simulink version 1.78, fixes a collsion when tilting up and panning.
Merge branch 'master' of https://github.com/acfr/snark