Front end authentication

[johnhester]

Description

• introduced authentication via AWS Cognito
• Note: At the moment if the user refreshes on the account confirmation page they will not be able to get back to it. This will be addressed later.

Type of change

• New feature (non-breaking change which adds functionality)

Testing Instructions

Please describe the tests required to verify your changes. Provide instructions so PR Tester can check functionality. Please also list any relevant details for your tests

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings or errors
• I have added test instructions that prove my fix is effective or that my feature works