Create visualizations instead of embeds

[StephanAkkerman]

We can create an image instead of an embed for the overview channel. This could be done for channels where the embed is not sufficient information, for instance when we need more than 3 columns. This will also fix the problem of it not working on mobile.

• What type of visualization?

[StephanAkkerman]

We could also consider ascii tables?

[StephanAkkerman]

Maybe after #524 and #263 we could do this more a more advanced overview

[StephanAkkerman]

Could also make charts for instance for index channel

[StephanAkkerman]

I feel like this would be more useful if this project was done as a website, where you could see a dashboard etc.