[orion-dev] Styling the outline hierarchy

[John J Barton <johnjbarton@xxxxxxxxxxxxxxx>]

Currently the outliner shows branches and leaves exactly the same,
even though they have completely different meanings.

I changed my outliner to include the '.' or '/' at the end of branches
but these only help a little.

I think the UI would be better if the leaves stood out relative to the
branches and if the leaves had tooltips giving the full name.

jjb