fix: ensure culture information respects browser locale

[liamgold]

Motivation

Currently dates are being displayed using the culture en-US, but could be displayed in the appropriate format based on the browser locale. Adding the RequestLocalizationMiddleware corrects this.

Checklist

• Code follows coding conventions held in this repo
• Automated tests have been added
• Tests are passing
• Docs have been updated (if applicable)
• Temporary settings (e.g. variables used during development and testing) have been reverted to defaults

How to test

If manual testing is required, what are the steps?

[seangwright]

Thanks for sticking with it!