Trade Value Calculator per intersecting_lines

Sometimes the extension requires two clicks on the icon for the stats to appear. Just open the link in a new window to fix that problem

If it's failling: You might need to give the app permissions because it makes a request to my site zhecht.pythonanywhere.com/extension to get latest values + player name translations.

Code is available to view at github.com/zhecht/ff_tradevalues