Adjustments to the edit views.

1) make the min height of the group name and person fields 48dips
2) for tablet, align the persons name and group name using an invisible
account header as a spacer
3) lign up the hint text for group name and the account name
4) line up the hint text for autocomplete adding a person and the
added members list
5) 64dip margins to left and right for tablet
fixes Bug:4962545 [Pixel perfect] Group editor

Change-Id: I58fd10e0984aee86e711c623aa4774ced85b8761