Format fix.
Change the time of screensaver.
Fix the layout of the learn more page.
Added the translated word lists.
Start to implement the accesibility feature.
Make the language picker operated by the keyboard.
Fix the rotation.
Remove the unused hover style.
Allow the helper extension to receive applyLocale messages from Pack.apps.
Remove debug logging.
Remove the dependency with the previous state from the arghorithm of sidebar layout.
Make the CSS setting of the hover hint more simple.
Make the footer of sidebar focusable.
Fix the focus management of Hangouts.app.
Fix the focus management of Music.app.
Fix the sidebar and the focus management of Store.app.
Handle the space key in Store.app.
Make the balloons focusable.
Diet Music.app.