Fix bug #12890909 Settings crashes when tapped on Add Account option in settings

Follow up from the previous CL that was trying to fix it.

- remove the dialog theme android:theme="@android:style/Theme.Holo.Dialog" as
a Dialog does not support a Drawwer

Change-Id: I8b3fe89c157f0b454464c04a4acd4f32049bde71