Created connection to Firebase NoSQL database and the skeleton

[dannylu03]

Description

• Setup the connection between app with cloud Firebase Database through the addition of the service.json key.
• DBinitializer class initializes an object reference for use to access the Database.
• DBService class is used to perform operations on the database.

Will be used by the gateway layer in our project.

[dannylu03]

Just added the change to fetch by userID, though I don't understand what we would change the Main class to be. Isn't this the main entry class, so Main would be an appropriate name?

[alfred-mikhael]

What's confusing me is that there are database methods defined in the Main class. I was under the impression that our Main class should just initialize all the objects we need and the JFrame, and not have any other methods inside it. Are you thinking of something different for the Main class?

[dannylu03]

What's confusing me is that there are database methods defined in the Main class. I was under the impression that our Main class should just initialize all the objects we need and the JFrame, and not have any other methods inside it. Are you thinking of something different for the Main class?

Oh I see, what you mean. Yeah the methods were just meant for testing and I was just thinking that after merging we can comment it out for later use.