Add an install frequency stat chiclet

[michaelblyons]

By the stars count and all-time installs, add a new stat like 📊 76/mo or 📊 76/4wk with the "recent" install rate, as outlined in #69 (comment)

[kaste]

I actually don't know what this refers to. Is that an embed like

[michaelblyons]

I meant in the style of our total-downloads or github-stars stats. An icon and a number (but here also the unit).

Edit for bad mockup:

[kaste]

I think your "bad mockup" comes from the package details page. Is that correct? We already have this information in the chart legend. I thought you want this on the card in the top right corner. So that we have this also on each search page.

For the cards it is difficult to get right because of all the different screen sizes we support. (I actually wanted MIA, RIP, ST2 etc -- all the meta labels -- here too with no luck.)

[michaelblyons]

I thought you want this on the card in the top right corner. So that we have this also on each search page.

I kind of want both, but I picked this page for tinkering with the HTML.