Avoid setting up a timer if it's unneeded #98
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This change checks whether there are any `updating-chart` elements on a page before setting up the timer that updates them. Obviously the check is unnecessary on *this* page, but the demo script gets copied into themes etc. and ends up loaded on pages that don't have any updating charts, wasting CPU time and electricity.
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This change checks whether there are any
updating-chartelements on a page before setting up the timer that updates them.Obviously the check is unnecessary on this page, but the demo script gets copied into themes etc. and ends up loaded on pages that don't have any updating charts, wasting CPU time and electricity.