Adding support for Safari 5.0

[GianniVullo]

Safari 5.0 doesn't have addEventListener method so the prefersReducedMotionStore cause the app to break on macOs < 10.16.

As a work around I added a script tag in the app.html that contains this polyfill :
// MediaQueryList not available globally on Safari 5.0 if (!window.matchMedia('(prefers-reduce-motion: reduce)').addEventListener) { function polyfillEventListener(mediaQueryList, eventName, listener) { if (mediaQueryList.addListener) { mediaQueryList.addListener(listener); } } // MediaQueryList still not available globally ... sigh var matchMediaInstance = window.matchMedia('(prefers-reduce-motion: reduce)'); matchMediaInstance.constructor.prototype.addEventListener = function(eventName, listener) { polyfillEventListener(this, eventName, listener); } } // ... then do the same for removeEventListner

If you have any suggestion that can enhance this piece of code, that'd be great :)
I hope it helps !