YUKI Hiroshi db4cd9b6f1 Revert "Don't close the window with the last group tab, if the last child of the group is closed. (#537)" ... This reverts commit 63a72c9e62.		2013-08-21 12:20:12 +09:00
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preferences	Revert "Don't close the window with the last group tab, if the last child of the group is closed. (#537)"	2013-08-21 12:20:12 +09:00