Visualize joint axis and display type and limits

[lucasw]

Show joint properties in left hand panel and optionally show joint axis as arrow in the 3d view.

[wjwwood]

Can you post some screenshots which show the behavior you've added. I believe I know what you intend from the code changes, but trying it locally I'm not seeing what I would expect. It would also be helpful if you could describe how you test it out so that we're using the same baseline for comparison.

[lucasw]

Load a robot model with joints that have axes to the parameter server, then add a RobotModel display to rviz, then expand Links, change Link Tree Style to Joints in Alphabetic Order or Tree of links and joints, then find a continuous, revolute, prismatic, or planar joint, then click the Show Joint Axis checkbox to show a green arrow for the joint.

... and it looks like unchecking the box doesn't make the arrow disappear, I need to fix that.

[lucasw]

Using rrbot from gazebo_ros_demos:

roslaunch rrbot_description rrbot_rviz.launch 

[wjwwood]

Ok, I was missing the part where you have to select a different tree view mode. lgtm