Autocomplete IE 11 Compatibility

[donduni]

Bug, feature request, or proposal:

Bug / IE 11 compatibility

What is the expected behavior?

1. Option selection via mouse
2. Correct initial placeholder position when input field empty
   

What is the current behavior?

1. Option List select via mouse click doesn't write the selected option into the input field. (Works using arrow keys)
2. On init with no input value, the placeholder should place down
   

What are the steps to reproduce?

The plunker example at the official documentation page.
https://material.angular.io/components/component/autocomplete

What is the use-case or motivation for changing an existing behavior?

Provide basic autocomplete functionality for IE 11.

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

Internet Explorer 11 (11.576.14393.0)

[crisbeto]

These should've been fixed by #3188, #3190 and #3189.

[donduni]

Thanks 👍

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