#76 [editor] inconsistent list indicator "+" / "-"

[XueSheng]

I'm using cometvisu svn 1871 and Ubuntu 13.04 with Firefox 23.0 as client. While using the build-in editor I noticed that the list indicators "+" and "-" are inconsistent. E.g. copy and paste of entries swaps "+" and "-".

Steps to reproduce (see attached drawing for explanation):
A. Open editor with default config: http://server-ip/visu_svn/editor/editor.html

1. Open tree 'pages->meta->mappings->mapping "Close_Open"'
2. Copy 'entry (zu)'
3. Paste to 'mapping "Open_Close"'
4. List of 'mapping "Open_Close"' was expanded, but "+" didn't change to "-"
5. Collapse 'mapping "Open_Close"' => "+" changes to "-", but should be "+"

[Christian Mayer]

Exported to https://github.com/CometVisu/CometVisu/issues/117