Summary support for Settings Home

Also add summaries to a few of the major items.

Change-Id: I17924f14941fe095d819e142cdd21cf4b4e9ffd1
diff --git a/src/com/android/settings/SettingsActivity.java b/src/com/android/settings/SettingsActivity.java
index 4eaabe9..bd9e6e9 100644
--- a/src/com/android/settings/SettingsActivity.java
+++ b/src/com/android/settings/SettingsActivity.java
@@ -188,7 +188,7 @@
     public static final String EXTRA_SHOW_FRAGMENT_AS_SUBSETTING =
             ":settings:show_fragment_as_subsetting";
 
-    private static final String META_DATA_KEY_FRAGMENT_CLASS =
+    public static final String META_DATA_KEY_FRAGMENT_CLASS =
         "com.android.settings.FRAGMENT_CLASS";
 
     private static final String EXTRA_UI_OPTIONS = "settings:ui_options";