[FR] Graph of sold items over time

[pc-coholic]

I think it would be nice to have an optional third graph, which shows the amount of tickets sold over time, stacked.

So kinda like the built-in pretix graph "Revenue over time" (it only grows higher).

The "New goal's amount of items to be sold" could still be used to draw a line - I'm just not 100% sure if the graph should include a detailed breakdown of every item sold... I guess, that could be yet another config option...

While I could use this graph, I have no immediate plans of implementing it, as I suck a graphs... Just leaving this here as an idea for next Hacktoberfest or something ;-)

[pc-coholic]

On second thought... I did just have 30 minutes of empty time on my hand... Oh well %-) PR coming soon...