Display properly runtime permissions without a corresponding app op.

We added the GET_ACCOUNTS permission to the contacts group
but it does not have an app op. The UI code was written with
the assumption that all runtime permissions have an app op
and was not showing the contacts group if the only requested
permission from that group was GET_ACCOUNTS.

bug:23726958

Change-Id: Iad5493297901c3f1144f4d58a3dad3f022c593a1