Add a new About Phone page.

This adds the "Me Card" page. The current functionality is to show
information based upon the first account added to the system. The page
shows the user's avatar, name, primary account, and phone number.

Bug: 63819909
Test: Robotest

Change-Id: I64bfae922e828994b2b87009d0647e67dab0da42

src/com/android/settings/Settings.java

@@ -55,6 +55,7 @@ public class Settings extends SettingsActivity {
     public static class NightDisplaySettingsActivity extends SettingsActivity { /* empty */ }
     public static class NightDisplaySuggestionActivity extends NightDisplaySettingsActivity { /* empty */ }
     public static class DeviceInfoSettingsActivity extends SettingsActivity { /* empty */ }
+    public static class MeCardActivity extends SettingsActivity { /* empty */ }
     public static class ApplicationSettingsActivity extends SettingsActivity { /* empty */ }
     public static class ManageApplicationsActivity extends SettingsActivity { /* empty */ }
     public static class ManageAssistActivity extends SettingsActivity { /* empty */ }