DB Layer

[pingevt]

I'm implementing lowdb as a simple database layer. Currently using for user auth, but i think there's a potential for a few other things as well.

Initially, was part of the Server package, but I pulled it out to the utilities, and created a DB manager. Because of the simple implementation, instead of using 1 file, I'm thinking each package (or whatever) should keep its own file (collection) in the DB manager.