Support for event history / timetables/...

[33Fraise33]

Hello,

During the times I am not looking at accweb I have no idea how actively my server is being used.

It would be nice to have some of the following features:

• Graphs of connected users over time
• results of previous events (visible for ro user / public) including timetables
• some kind of integration with discord: Sent all chat to channel, sent alert when X amount of users connect, ban user from chat message in discord,...