Resolve "Create loader for first time app startup"

What does this MR do?

Add a database loader for production so that a new admin account can be added when the server starts up for the first time.

Does this MR meet the acceptance criteria?

• I have added tests to validate the new functionality.
• I have updated the documentation accordingly.
• I have added translations for all new client-side text.

Closes #109 (closed)