added asus sensor and all its children links to the final xacro file
modified display properties for arm with attached asus sensor
regenerated files to reflect changes in origination urdf file
parameters_changed_handler() method updates widgets
added controller argument for sia20d
hides interactive markers
added preview path button and made 'group' entry readonly
moved roof to a slightly higher position
rotated asus_frame 180 about y  relative to asus_mount
regenerated urdf file to reflect changes in originating xacro files
added new planning group 'manipulator_asus' which includes the 'asus_frame' as part of the links in the arm
modified scan trajectory generation parameters to match asus_frame eff
uses computeCartesianPath method in order to create well behaved trajectories in cartesian space
added stop method
configuration files for asus sensor