Recent datasets home page

[bdeadman]

Have the home page show some recently added datasets. Would want enough information to get the audience interested in the dataset and/or paper.

Suggested info to display:

• dataset name
• dataset description
• dataset size
• preview of first reaction
• dois from the included reactions in the dataset (condense to 'multiple' if more than 1)

[skearnes]

I like this idea; I think something like a dataset card would be useful here? Instead of just the table make it more like the reaction results page with reaction cards?