Migrated from:
http://developer.atlassian.com/jira/browse/GLFY-28
1. open a diagram with more than 10 revisions.
2. click show all revisions
3. open up revision 2. show all revisions buttons shows up (this is
different than online)
4. click Save.
Notice revisions now go underneath show all revisions button
This might stem from the fact, that on Gliffy Online for example, once
someone clicks Show All Revisions, we don't show that button again.. even
if they open a previous revision, we still show all revisions