Feature request: add align attribute to md-dialog-actions

[icepeng]

md-card-actions has 'align' attribute that allows us to sort elements. I thought md-dialog-actions has same attribute, but not. It is not necessary, but needs to be implemented for consistency.

[crisbeto]

This was planned actually.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}