Switch to using MySQL for Database (instead of MongoDB)

See https://github.com/felixge/node-mysql

This is because ITTS uses an Oracle database, and the best way to connect with that is through a View of the Oracle database which acts as a MySQL database.

Start by reviewing the application’s existing MongoDB integration and the linked node-mysql project. No files or tests are named, so first map the current database entry points and determine how the Oracle-backed MySQL view should be accessed. Done means the application uses MySQL instead of MongoDB without losing its existing database behavior.

Written by the indexing model from the issue text.