Revisions: hide tick marks and tooltips for IE 7.

Not worth the effort it would take to get them to work.

Props adamsilverstein. Fixes #24736.

git-svn-id: http://core.svn.wordpress.org/trunk@24756 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Compress scripts/styles: 3.6-RC1-24757.

git-svn-id: http://core.svn.wordpress.org/trunk@24757 1a063a9b-81f0-0310-95a4-ce76da25c4cd