Add a new variation for Valo

A new variation named “Light”, similar to iOS7 style.

Fix some valo-menu styles to accommodate the new light style better.

Change-Id: Ib7c396263db7838c972d75a6b79fed1caf7ca576
Last minute small fixes to Valo

Change-Id: Ib4dfac4ee2bb858d02c34a920ad53e37e73b73e1