Default to PhabletUI NavBarLeft + SlimNavBar

Change-Id: I92ef0c46fa04ac2a0876dfe6fd201e56485b37bd
Deactivate MultiWindow icons until fixed

Change-Id: Ib22aca95afb2c8804b65f770e9922ed21d5f6ffc
Rename Expanded Desktop to Immersive Mode

Change-Id: If00035dd06c254b7a27db607432d28b3f14efb81