Make front page metrics clickable

[steinbeck]

Whenever I go to the nmrxiv frontpage, I look at the metrics (right now it says: "59 Projects, 353 Compounds, 1997 Spectra") and I want to click on one of the entries, typically the compounds, to get a list of all compounds in nmrxiv. Would be great if a click on "projects" would lead to a list of projects, a click on "compounds" would give a list of compounds, etc.