DBus add ToggleInLeft method and ControlCenter default show in right

tower: https://tower.im/projects/8f19f0bf0e754f0b82ef2c24bc230973/todos/4b28263be82b4c2d9de130c23a8a2c0d/#d63f8111adf74f1bac17092b5fe4d43a

Change-Id: I3025a83b99c1691a6aba2b0b62cb2d30ad5b6702