General:
- User model was extended with 3 extra fields (i.e. contactnumber, acct_balance, acct_available)

API Progress:
- User model has successfully adapted with the extra fields. It is being displayed when the user details are requested (URL: root\<username>)


Signed-off-by: Jean Britz <britz.jean@gmail.com>
General:
- Some progress made
- Permissions must still be set for each user using the application
- There are two group of users: Consumers and Vendors:
>> Consumer has Transactions, but does not have Invoices
>> Vendors has both, because a Vendor creates an Invoice and may want to credit a Consumer.
- Registration module is set in place, just still need to add style.

API Progress:
- Invoices is incorporated with the API. It is accessible by any user, just for testing purposes

To-do:
- Make a Transactions model and integrate it with the rest of the database.
- Implement the appropriate Permission for each user

Signed-off-by: Jean Britz <britz.jean@gmail.com>