Merge "[Settings] Code Refactor" into rvc-dev

        addPreferencesFromResource(resId);

        final PreferenceScreen screen = getPreferenceScreen();

        screen.setOnExpandButtonClickListener(this);

        displayResourceTilesToScreen(screen);

    }

    /**

     * Perform {@link AbstractPreferenceController#displayPreference(PreferenceScreen)}

     * on all {@link AbstractPreferenceController}s.

     */

    protected void displayResourceTilesToScreen(PreferenceScreen screen) {

        mPreferenceControllers.values().stream().flatMap(Collection::stream).forEach(

                controller -> controller.displayPreference(screen));

    }