md2Datepicker, minute select on IE 11 displays full timestamp

[mhecktor]

Bug, feature request, or proposal:

BUG

What is the expected behavior?

It should display numbers from 0 - 55 incremented by 5 per steps

What is the current behavior?

It displays a full timestamp "31/12/2016 00:55:00"

What are the steps to reproduce?

Open it in IE 11

Which versions of Angular, MD2, OS, browsers are affected?

Angular 4 md2: 0.0.25 Windows IE 11

[mhecktor]

Same workaround for this ticket as for https://github.com/Promact/md2/issues/261 'this.dateLocale.minutes = this.range(60, i => String(i));'