Update strings in special app access and dev options

- Change all yes/no or on/off strings in special app access to
  Allowed/Not allowed
- Remove some dead code in related files
- Add a toast string in DevelopmentSettingsDisabledActivity to prompt
  user enable dev options before use.
- Add search in SpecialAccessSettings

Change-Id: I8b2535e037a86e76bdbcd3fb6e1cf2e0347bedbf
Fix: 38290299
Fix: 37469224
Test: make RunSettingsRoboTests

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

@@ -15,11 +15,6 @@
  */
 package com.android.settings.applications;
 
-import static android.app.Activity.RESULT_CANCELED;
-import static android.app.Activity.RESULT_OK;
-
-import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
-
 import android.app.AlertDialog;
 import android.app.AppOpsManager;
 import android.content.Context;
@@ -29,12 +24,16 @@ import android.os.UserManager;
 import android.support.v7.preference.Preference;
 import android.support.v7.preference.Preference.OnPreferenceChangeListener;
 
+import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.Settings;
 import com.android.settings.applications.AppStateInstallAppsBridge.InstallAppsState;
 import com.android.settingslib.RestrictedSwitchPreference;
 import com.android.settingslib.applications.ApplicationsState.AppEntry;
 
+import static android.app.Activity.RESULT_CANCELED;
+import static android.app.Activity.RESULT_OK;
+
 public class ExternalSourcesDetails extends AppInfoWithHeader
         implements OnPreferenceChangeListener {
 
@@ -97,8 +96,9 @@ public class ExternalSourcesDetails extends AppInfoWithHeader
             appsState = new AppStateInstallAppsBridge(context, null, null)
                     .createInstallAppsStateFor(entry.info.packageName, entry.info.uid);
         }
-        return context.getString(appsState.canInstallApps() ? R.string.external_source_trusted
-                : R.string.external_source_untrusted);
+        return context.getString(appsState.canInstallApps()
+                ? R.string.app_permission_summary_allowed
+                : R.string.app_permission_summary_not_allowed);
     }
 
     private void setCanInstallApps(boolean newState) {