0001047: Collada export
new Part Primitives icons, display tree icons Part Line and Circle

New icons for Parametric Part Primitives
Point, Line, Circle, Ellipse, Helix

Display the icon in tree via independent viewproviders for
Part Parametric Line and Circle

Change Part Box tree icon to display yellow Part Box icon from the tool bar
add ViewProviders & Tree icons for Part Point, Ellipse, & Helix

Add ViewProviders to select an icon for the part primitives
Point, Ellipse, Helix,
Also return Part Box tree icon to "Tree_Part.svg"