Add safety & regulatory info to "about device".

Renamed "Regulatory information" to "Regulatory labels"
and added a new option called "Safety & regulatory information".

The new option only shows if an activity exists that can
accept android.settings.SHOW_SAFETY_AND_REGULATORY_INFO intents.

BUG: 27876015
Change-Id: Iaf9588658eb7919b330ac8b3d673b8e81a4f76dc

src/com/android/settings/RegulatoryInfoDisplayActivity.java

@@ -56,7 +56,7 @@ public class RegulatoryInfoDisplayActivity extends Activity implements
         }
 
         AlertDialog.Builder builder = new AlertDialog.Builder(this)
-                .setTitle(R.string.regulatory_information)
+                .setTitle(R.string.regulatory_labels)
                 .setOnDismissListener(this);
 
         boolean regulatoryInfoDrawableExists = false;