Update data usage UX

Update the UX and dig the data usage screen out of a huge whole of
technical debt.  Switch every to use Preferences rather than standard
layouts and ListViews.

Split data usage into several fragments, all separated.

DataUsageSummary:
 - Shows a summary of the 'default' usage at the top, this will be
   the default sim on phones, or wifi if it has it, or ethernet
   as last attempt to show something.
 - Also has individual categories for each network type that has
   data, cell, wifi, and ethernet. Maybe should look into bt though?

DataUsageList:
- Takes a NetworkTemplate as an input, and can only be reached from
  the network specific categories in DataUsageSummary
- Shows a graph of current usage for that network and links to
  app detail page for any app.
- Has gear link to quick get to billing cycle screen if available

BillingCycleSettings:
 - Just a screen with the cycle day and warning/limits separated
   out from the data usage.

AppDataUsage:
 - App specific data usage details
 - May need some UX iteration given lack of clarity in the spec

Bug: 22459566
Change-Id: I0222d8d7ea7b75a9775207a6026ebbdcce8f5e46

src/com/android/settings/search/Ranking.java

@@ -17,7 +17,6 @@
 package com.android.settings.search;
 
 import com.android.settings.ChooseLockGeneric;
-import com.android.settings.DataUsageSummary;
 import com.android.settings.DateTimeSettings;
 import com.android.settings.DevelopmentSettings;
 import com.android.settings.DeviceInfoSettings;
@@ -35,6 +34,8 @@ import com.android.settings.accounts.AccountSettings;
 import com.android.settings.applications.AdvancedAppSettings;
 import com.android.settings.applications.ManageDefaultApps;
 import com.android.settings.bluetooth.BluetoothSettings;
+import com.android.settings.datausage.DataUsageMeteredSettings;
+import com.android.settings.datausage.DataUsageSummary;
 import com.android.settings.deviceinfo.StorageSettings;
 import com.android.settings.display.ScreenZoomSettings;
 import com.android.settings.fuelgauge.BatterySaverSettings;
@@ -42,7 +43,6 @@ import com.android.settings.fuelgauge.PowerUsageSummary;
 import com.android.settings.inputmethod.InputMethodAndLanguageSettings;
 import com.android.settings.location.LocationSettings;
 import com.android.settings.location.ScanningSettings;
-import com.android.settings.net.DataUsageMeteredSettings;
 import com.android.settings.notification.ConfigureNotificationSettings;
 import com.android.settings.notification.OtherSoundSettings;
 import com.android.settings.notification.SoundSettings;