Checkpoint of new storage wizards.

Use frameworks/opt/setupwizard/library/ for consistent behavior and
styling on phones and tablets.  Implement every step of wizard flow
and connect them together, even though some steps are currently
non-functional.  All strings to match UX spec, with some adjustment.

Wizards inherit from helper base class.

New interstitials before unmounting or formatting private storage
to confirm user knows consequences.

Bug: 19993667
Change-Id: I2c774e1718d513805ee8aecfc96d066d4730450c
diff --git a/Android.mk b/Android.mk
index 9cb7e2e..81f04f7 100644
--- a/Android.mk
+++ b/Android.mk
@@ -19,6 +19,7 @@
 LOCAL_PROGUARD_FLAG_FILES := proguard.flags
 
 include frameworks/opt/setupwizard/navigationbar/common.mk
+include frameworks/opt/setupwizard/library/common.mk
 include frameworks/base/packages/SettingsLib/common.mk
 
 include $(BUILD_PACKAGE)