Update top level menu items summary text.

- Use static summary for most items
- Move summary for user setting to user&account setting

Bug: 34975053
Test: RunSettingsRoboTests
Change-Id: I9bf87267778dc5933f97f5d3b9ae0f4f0b8da1a8

src/com/android/settings/SecuritySettings.java

@@ -1300,7 +1300,8 @@ public class SecuritySettings extends SettingsPreferenceFragment
                         dashboardFeatureProvider.getTilesForCategory(CategoryKey.CATEGORY_SECURITY);
                 mSummaryLoader.setSummary(this, getPackageVerifierSummary(dashboardCategory));
             } else {
-                mSummaryLoader.setSummary(this, null);
+                mSummaryLoader.setSummary(this,
+                        mContext.getString(R.string.security_dashboard_summary));
             }
         }