Empty project

• first create a firebase project and link it with your app

• replace PROJECT_ID in MConstants with firebase project id

• uncomment apply plugin: 'com.google.gms.google-services' in gradle

• replace all own_distributor by your project id (preferable to be the same as the firebase project id) by using ctrl + shift + r

• replace empty project with your app name

• replace your icon with ic_launcher

• create a facebook project to link with your project

• activate firebase authentication, firestore, storage and notification

• open StartClassHelper and add the sign up activity intent (after authentication) and add your main activity

• update onSyncFinished in the MohafizMainActivity

• update usermodel