don't show new features that require new perms on < SDK 23

app/src/main/java/org/torproject/android/OrbotMainActivity.java

@@ -449,6 +449,11 @@ public class OrbotMainActivity extends AppCompatActivity
         MenuInflater inflater = getMenuInflater();
         inflater.inflate(R.menu.orbot_main, menu);
 
+        //We don't support these on per SDK 23
+        if (BuildConfig.FLAVOR.equals("minimalperm")) {
+            menu.findItem(R.id.menu_hidden_services_main).setVisible(false);
+        }
+
         return true;
     }
     

app/src/main/res/menu/orbot_main.xml

@@ -47,6 +47,7 @@
     <item
         android:title="@string/menu_hidden_services"
         yourapp:showAsAction="never"
+        android:id="@+id/menu_hidden_services_main"
         >
       <menu>
         <item android:id="@+id/menu_hidden_services"