This one's unfortunate: I didn't put that on mQuery because it's clock-specific. I wanted to get rid of these calls and replace them with pure-Marionette `.enabled()` calls, but for historical reasons Clock doesn't disable its buttons like that. I intended to keep mQuery generic, so I opted to put the helper method in `utils`. Perhaps if I end up renaming `ClockApp` per above, we could merge these namespaces.