Editor places setup and move properties in the same node

[yewang]

When using the "black stone" or "white stone" tools to add/remove stones, the editor will place setup properties (AB, AW, AE, etc.) to be placed alongside move properties (B, W, etc.).

The SGF standard specifies that this is illegal for FF[4].
http://www.red-bean.com/sgf/sgf4.html#2.2.1