Handle requests for non-existent comparisons
Actually load and list comparisons in the client, now that the backend exists
Add a working loading spinner
Make sure fixed-header actually uses template correctly
Move to a much fancier handwritten spinner
Put the loading spinner into action, whenever we're waiting for a comparison
Handle comparisons without items
Refactor comparison data mapping out for clarity in comparison-query
Replace 'all comparisons' endpoint with 'guest' comparisons
Fix indentation
Make sure 'cool' is weighted as highly as it deserves (sentiment-wise)
Load comparisons for guests, plus some improvements to the loading UX generally