[FEATURE] Stats for trackables

[+the Seagnoid]

I love TBs. I would love to see stats of trackables added to the mini-stats bar. These could be "discovers/releases". Sure I can get the info another way, but that argument also applies to finds/hides and argues to get rid of the mini-stats bar, which is kinda neat. Probably no point point the full stats page on trackables, but some of the graphs would still be nice - discovers/month and acumulated discovers/month for example. Discovers here would also include grabs, and should just be unique counts (ie ignore subsequent grabs)