Add support for material_blue theme, which setup wizard is going to
use for M. This changes SetupWizardUtils.getTheme to always return
either SetupWizardTheme or SetupWizardTheme_Light, and added the
theme value "material" blue.
Bug: 19729981
Change-Id: I63678312af4942be358b92a58b1c84f89aaaa6c1
Added the illustration JPG files, and added
SetupWizardUtils.setIllustration method that will change the
illustrations in the layout.
Bug: 18482708
Change-Id: I8c6758113f07cd33f85eaf6bc019e8194d9a17ce
Use the setup wizard theme for EncryptionInterstital and
RedactionInterstitial as they will show during the lock screen setup
as part of setup wizard.
Bug: 18482708
Change-Id: I65c8924952345a4e17fcf4ffb7d68df53244c5d7