Portal.view.about.Container: update the content

@maxrahder @Dinkh: Looking back at the time since February, you made it very clear that you no longer want to be part of the neo team. The amount of broken promises is way too much. I hope you at least realise that this has caused severe damage on my end. A team does not work with just sitting on the backseat and watching what Tobi is doing, while not taking ownership of anything.

As a sign of good will, I can keep you on the "About Us" page, but I will change your roles to "Contributor".

In case you want to get removed completely, you are welcome to create a PR.

If you change your mind at some point, you are welcome to schedule a call.

Best regards, Tobi