Tomaz Canabrava 9523132b6d Only show Collapse all when its needed
This makes Collapse All only visible when its needed, and it
also fixes a crash when invocking collapse all when there was
nothing to collapse.

Signed-off-by: Tomaz Canabrava <tomaz.canabrava@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
2015-05-11 07:30:52 -07:00
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