Update Battery settings main page string (1/2)

- Update Battery usage preference summary string
 - Update Battery saver preference summary string
 - Update Adaptive preference column string
 Screenshot: https://screenshot.googleplex.com/6FVaoeHjTSFs2o6.png

Bug: 183689347
Test: make RunSettingsRoboTests -j40
Change-Id: I72c5ebb5d3fd189db7c40c645b8dab4367d154ba

src/com/android/settings/fuelgauge/BatterySaverController.java

@@ -111,7 +111,7 @@ public class BatterySaverController extends BasePreferenceController
                             Utils.formatPercentage(percent)) :
                     mContext.getString(R.string.battery_saver_off_summary);
         } else {
-            return mContext.getString(R.string.battery_saver_auto_routine);
+            return mContext.getString(R.string.battery_saver_pref_auto_routine_summary);
         }
     }