Users can click on a meal category while registering

[anjelbenitez]

Summary:

Users can click on a meal category from the home page while the register form is open.

Steps to reproduce:

1. Navigate to the "Home" page.
2. Click on "Register" in the nav bar.
3. Once the register form has popped up, click on any one of the captions over the meal category images, i.e. click on the caption "View Breakfast Recipes".
4. You will be redirected to a 404 page saying that the page is nowhere to be found.

Expected Result:

Users should not be able to click on a link navigating away from the page once the register form has popped up, unless they first close out the register form box.