Backend login function...

... connected to the PostGreSQL database!!!
HUGE COMMIT! (POSTGRESQL DATABASE)

- Added a new User object
- Added a zerver MyAPI.js file with many new database connection
functions such as update, delete, and add pet
- Added client side functions in the frankerzUtilities file that calls
the backend database functions
More database functions...
Minor changes
Login / Register Page

register functionality incomplete
Merge branch 'master' into Database-Integration
Merge to master