[lively-kernel] Object Editor

[Fabian Bornhofen]

Hi -

I just put a sneak preview of some improvements to the Object Editor
in PartsBin/Fabian (ObjectEditorII).

The idea is to make the script editor less noisy. I got rid of
'this.addScript....' in the editor pane.

Besides being more understandable to new (and old) users, it has a few
more technical advantages as well (enables us to fix
http://lively-kernel.org/trac/ticket/274).

Challenges:
- How to improve UI for tagging methods?

Have fun,
Fabian