express/react: add way to edit reviews

[gagataiga]

This will require a request to check the users email address for their reviews and a patch request to change the contents requested

[kappanjoe]

Requirement suggestions:

Express:

• [x] Create endpoint to get all reviews by author email
• [x] Should return 400 status when provided an invalid email

React:

• [ ] User should be able to submit email address
• [ ] User should be able to see all reviews by email address
• [ ] User should be able to select review to edit
• [ ] User should be able to submit edited review

[kappanjoe]

To help anyone who wishes to take on the front-end requirements, I've added a new /api/reviews endpoint on the associated feature branch 1-expressreact-add-way-to-edit-reviews. Endpoint will take a raw JSON object in the body with an email property, e.g.:

{ "email": "address@emailhost.com" }