Bug : Fix review button when shopping cart empty and if user is not login redirect user for login from review order button

[semih1239]

Description

This PR is removing 'review order' button from cart page if cart page is empty

Fixes #272

How to test?

npm run dev => Test with empty shopping cart

Checklist

• [X] I have performed a self-review of my own code
• [X] I have followed the name conventions for CSS Classnames and filenames, Components names and filenames, Style filenames, if you are in doubt check the the project README.MD and here https://github.com/HackYourFuture-CPH/curriculum/blob/master/review/review-checklist.md
• [X] I have commented my code, particularly in hard-to-understand areas, if you code was simple enough mark the box anyway
• [X] I have made corresponding changes to the documentation, if you code was simple enough mark the box anyway
• [X] This PR is ready to be merged and not breaking any other functionality