Re-enable right click paste/cut

[adam-knights]

The right click menu has been disabled on the component. This can be removed once we get cut and paste via the right click menu working.

I tried http://stackoverflow.com/a/38898022/2482265 but this did not work.

I also tried manually with JQuery inside didInsertElement, with code similar to

if (e.originalEvent.clipboardData && e.originalEvent.clipboardData.types
                && $.inArray('text/plain', e.originalEvent.clipboardData.types) !== -1) {
  dateString = e.originalEvent.clipboardData.getData('text/plain');
}
else if (window.clipboardData) {
  dateString = window.clipboardData.getData('Text');
}
else {
  return;
}

But this has issues if they paste part of the date. The other way is to use a sertTimeout of 100ms and give Ember time to update the value. But that feels too hacky.