Implement redesign of raised hand notification dialog

[bitionaire]

To further clarify some design details that aren't self explanatory by the exported design:

• Width of the notifications should be defined by the length of the usernames

[Kraft-16]

Redesign of notification dialog: https://xd.adobe.com/view/161672d3-fa43-4a37-9832-e596ea512e3a-4345/

[Schwehn42]

how is this supposed to behave when multiple people are raising their hands at the same time? currently, they're stacked on top of each other in a scrollable container which is stretched in its height. seperate notifications would be better wouldn't they?

[Kraft-16]

https://xd.adobe.com/view/ca79875f-7c71-4ea7-b9f9-d3932098ce2e-9f2a/ when several people raise their hands at the same time, the notification appears below the previous window.

[Schwehn42]

alright cool 👍

[Kraft-16]

new Redesign: https://xd.adobe.com/view/827e788e-2f09-465f-9a2a-ff59f7362acc-d72d/