Have an ability to dismiss avatar notifications

[MadaraUchiha]

Currently, you have no way of dismissing the Avatar Notifications of cv-pls or delv-pls requests, without actually clicking on it and viewing the message itself.

That is undesireable since it's possible that chat was left on for long, etc.

I wish to request a way to dismiss these, either a cancel button, or a more intuitive ESC click.

[DaveRandom]

We need to agree how this should be implemented. While we could just hook into ESC I personally don't think this is the right solution, because the @mention notifications already use this hook, and I don't necessarily want to dismiss both at once.

[MadaraUchiha]

Many things use the ESC hook. It can be used to discard a message, close dialogs and dismiss notifications. I don't think that adding another one would harm the user, and it's the most intuitive.

[DaveRandom]

It seems the general consensus on this is to use ESC, we will implement this for the 0.21 and see how we get on with it.