This app allows a PicApp superuser to manage all aspects of the application. From adding, modifying and deleting servers and/or users to check app's statistics from Firebase.
To run the app, you need to have installed npm. If you have it in your system, then open a console in the project directory and run:
$ npm start
With that, npm will set up the environment and open a browser with the app.
It is highly probable that your browser will complain about some CORS issues; because of that, you should download and activate the CORS Chrome Plugin. Moreover, sometimes you will have to activate it AFTER starting the app with npm. Also, for file administration, you will need to have CORS OFF, otherwise, Firebase won't answer to http calls.
This app is also running on a Heroku server. You can see it here.
As well as the mentioned CORS issues, when opening the app hosted in Heroku, your browser may notify you that it is not a safe connection; to let the app work properly, just ignore the notice and give it permission to execute.
You may find the user guide here.