Fix/conditional cookie

[totally-not-frito-lays]

Describe your changes

Makes an activity out of the bakery selection. Parts of the website are now broken until they select one of the two bakeries.

Issue link

• Fixes #46
• Replaces #40

Checklist before requesting a review

• [x] I have confirmed that my updates are on the correct branch.
• [x] I have performed a self-review of my code.
• [x] I have performed a self-review of the updates on the browser.
• [x] I have confirmed that this update does not break anything else, visually or within the code.