Combine user data

[Danielbrey]

I combined the users.json and profile.json into one dataset containing people's data. I also changed the useStates that used users.json to use profiles.json instead (user "a" is the initial user for now, and their data will possibly stay up now matter who logs in). I also changed the variable "person" that ProfilePage.js took in to be the data of that person instead of the number name they are in the list.

[corey-scheinfeld]

Will be helpful for creating database.