Jasper St. Pierre 8b3b91d78d workspace: Invalidate the current layout when windows are added or removed
If windows are removed or added, we shouldn't keep the old layout, as it's
not valid anymore. If windows are removed, this is especially bad, as the
rows contain references to the removed window objects, causing crashes.

https://bugzilla.gnome.org/show_bug.cgi?id=698622
2013-04-22 18:33:34 -04:00
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