mdDatepicker: mdInputContainer ngMessages unaligned with other input types

[mckenzielong]

Actual Behavior:

• What is the issue? * mdDatepicker + mdInputContainer has inconsistent ngMessages placement when compared to other inputs.
• What is the expected behavior? The error messages div is positioned in line with the other containers

CodePen (or steps to reproduce the issue): *

• CodePen Demo which shows your issue: http://codepen.io/mckenzielong/pen/bZJdrq
• Details: Click each input to trigger the required error. Note the datepicker's error div is positioned slightly lower than the others.

Angular Versions: *

• Angular Version: 1.5.8
• Angular Material Version: 1.1.0

Additional Information:

• Browser Type: * Opera / Chrome
• Browser Version: * 39 /52
• OS: * Windows 7 64bit
• Stack Traces: N/A