Show / hide .. and possibly edit "advanced properties" on get_servos_worky branch.
Working with real servos now - found a few control bugs - have a few more to go.  One of the bugs fixed was the pos of the slider initialized to the correct place. Initially as the UI loads - the properties are hidden until on clicks on it.  They potentally are bound to relevant info describing their function.  

I'd like all service UIs to follow the same sort of basic design - ie Any status info at the top, control in the middle then an advanced show/hide properties section