Update to database code to allow dependency injection
Further progress with testing and refactoring of database. Entity and Address models defined. Entity to Address relationship working.
Completed db restructure. It now uses Flask-SQLAlchemy. There are some initial tests in place to ensure test data is able to be read and relationships are working.
Updated requirements.txt
Fixed some errors that were left in application.py... application server should actually run now too!
Attempting to merge db_restructure and registration_of_new_organization branches.