Turbolinks >= 5 accumulates event listeners

[mylesboone]

The core_js encapsulated in the event listener gets executed on any subsequent turbolinks visit. This triggers accumulating Uncaught Error: Highcharts error #13: www.highcharts.com/errors/13 errors. Like the Turbolinks < 5 code, we should remove our event listener the first time the listener executes.

[mylesboone]

This is a duplicate of #223 but that has been stale for over a year.
There's also PR #249 and #224 that would fix this.

Suggested changes here: BaldwinAviation@7f050a4