Jake Dallimore 3d4339b817 MDL-58182 javascript: Fix for buttons regression in core dialog.
Fixes a regression caused by MDL-56364, wherein the buttons were made
readOnly, meaning addButtons wouldn't work. This removes that change,
while maintaining the original dependency between the buttons and the
closeButton config options.
2017-03-17 09:05:04 +08:00
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