Fix one NPE in tethering setting

Once we not declare BT feature, go Setting->more->tethering
will trigger this NPE.

Change-Id: I4736e7bade261475acda74e26250a81452018ffa
Signed-off-by: Jianzheng Zhou <jianzheng.zhou@freescale.com>
Fix app ops details not displaying permissions under certain conditions.

If there's a permission that is not granted, the loop is aborted instead
of just skipping said permission.

Change-Id: Icca567ebdd818f40ad6619f258c77590074d1deb