md-menu-items text-align in Edge is centred

[riankol]

Bug, feature request, or proposal:

Bug

What is the expected behavior?

menu-item text has a text-align set to 'left'.

What is the current behavior?

mat-menu-item has attribute text-align set to 'start', but Edge can't handle this well and centers the text in the menu-items.

What are the steps to reproduce?

Check your own Example at
https://material.angular.io/components/component/menu
in Edge

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

Menu's with centred text are very ugly

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

2.0.0-beta.2
Edge

Is there anything else we should know?

[angular-automatic-lock-bot]

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