DialogAlert window changes for Micro

Bug: 13243004

- The only difference between alert_dialog_micro.xml and alert_dialog_holo.xml is:
<     android:layout_height="match_parent"
---
>     android:layout_height="wrap_content"
>     android:layout_marginStart="8dip"
>     android:layout_marginEnd="8dip"

Change-Id: I84f9a88099a37aa7f5868e128b19cb1e812cb745