Web: Show points development

[TheJonny]

Would be cool to see if an exploit is working

Original German title: Punkte aus aktueller Runde im Scoreboard anzeigen

Original German text: wär cool, dass man sofort sieht, ob ein exploit/patch funktioniert

[F30]

We need better ways to diplay of scoreboard development over time. Ideas:

• Show difference to previous tick on the scoreboard
• Allow to scroll through the scoreboards of previous ticks
• Graphs (see also Support Grafana visualizations of a CTF #31)

[nename0]

Additionally the bonus scoring for attack points (based on overall captures) only gets updated after 5 ticks. So these points are awarded 5 ticks later, which makes scoring intransparent.