Port Dualpanel for Settings from Beergang

[log]

Change-Id: Icc03ba78c6670a9d3e7ea7f0a008560ae3357289
Remove warning on performance settings

[log]

Change-Id: Ie9f493d6963652da8128e35f931b6218b866f0c3
Add / modify some strings

Change-Id: I7a76892983a30d4431586d5b4cf185343cfab16e