jquery.tipsy: Unbreak the 'live' option for now
It used jQuery.fn.live, which stopped existing when we removed jQuery
Migrate (c393f874). This patch basically reimplements it.
Both .context and .selector properties used here are deprecated and
will be removed in the future, so we should come up with a better
solution at some point (or intentionally disallow using this option,
rather than breaking it by accident). For now, re-added the tracking
and logging, like what jQuery Migrate provided.