Update preference screen title.

- Add missing title to preference screen xml so that they will be used to
set the activity title when the fragment is launched.
- Also updated some incorrect preference screen titles.
- Overrides getTitle() in preference fragments that do not use the
preference screen xml.

Bug: 64564191
Test: blaze-bin/screenshots/android/i18nscreenshots/i18nscreenshots
Change-Id: Id72d5ddf18f0962bc484de8bbd847a2e55d6371e

src/com/android/settings/applications/RunningServices.java

@@ -15,6 +15,7 @@
  */
 package com.android.settings.applications;
 
+import android.annotation.StringRes;
 import android.os.Bundle;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -108,6 +109,12 @@ public class RunningServices extends SettingsPreferenceFragment {
         mOptionsMenu.findItem(SHOW_BACKGROUND_PROCESSES).setVisible(!showingBackground);
     }
 
+    @Override
+    @StringRes
+    protected int getTitle() {
+        return R.string.runningservices_settings_title;
+    }
+
     @Override
     public int getMetricsCategory() {
         return MetricsEvent.RUNNING_SERVICES;