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

res/menu/data_usage.xml

@@ -15,25 +15,7 @@
 -->
 
 <menu xmlns:android="http://schemas.android.com/apk/res/android">
-    <item
-        android:id="@+id/data_usage_menu_restrict_background"
-        android:title="@string/data_usage_menu_restrict_background" />
-    <item
-        android:id="@+id/data_usage_menu_show_wifi"
-        android:title="@string/data_usage_menu_show_wifi" />
-    <item
-        android:id="@+id/data_usage_menu_show_ethernet"
-        android:title="@string/data_usage_menu_show_ethernet" />
-    <item
-        android:id="@+id/data_usage_menu_metered"
-        android:title="@string/data_usage_menu_metered" />
-    <item
-        android:id="@+id/data_usage_menu_sim_cards"
-        android:title="@string/data_usage_menu_sim_cards" />
     <item
         android:id="@+id/data_usage_menu_cellular_networks"
         android:title="@string/data_usage_menu_cellular_networks" />
-    <item
-        android:id="@+id/data_usage_menu_help"
-        android:title="@string/help_label" />
 </menu>