Developer credits
Git commits in Moodle 2.1.x by Aaron Wells
commit 4b72f9eb78157324efaa87a2f55c27206c0eee34 Author: Aaron Wells <aaronw@catalyst.net.nz> Date: Tue, 12 Apr 2011 10:30:13 +0800 Tag: v2.1.0 MDL-26167 lib/form: Altering Javascript so that "disabledIf" will disable the "Choose" button for a filepicker