Update recently opened app string and "see all" summary

Change-Id: I84a01f01ac1c685db87970c3137f30ba58c800b3
Fix: 62040104
Test: make RunSettingsRoboTests

tests/robotests/src/com/android/settings/applications/RecentAppsPreferenceControllerTest.java

@@ -178,7 +178,7 @@ public class RecentAppsPreferenceControllerTest {
         // it's invalid app.
         verify(mCategory, times(1)).addPreference(any(Preference.class));
 
-        verify(mSeeAllPref).setTitle(R.string.see_all_apps_title);
+        verify(mSeeAllPref).setSummary(null);
         verify(mSeeAllPref).setIcon(R.drawable.ic_chevron_right_24dp);
     }