popup chat close on esc added.

[barisgul15]

Motivation and Context

closes #1280

Description

add an event listener so that popup chat is closed when esc is clicked

Steps for Testing

Prerequisites:

1. Log in
2. Navigate to a lecture recording with chat enabled or create one
3. Open popup chat and click esc and check whether it closes the popup chat browser or not

Screenshots

[github-actions]

Your Testserver will be ready at https://1281.test.live.mm.rbg.tum.de in a few minutes.

Logins

Kurs1	Kurs2	Kurs3	Kurs4
public	public	loggedin	enrolled
prof1	prof1	prof2	prof1 prof2
student1 student2 student3	student1 student2	student2 student3	student1 student2

[alexanderstephan]

I think that this is a convenient feature. 👍 But we should document that shortcut somewhere, right? Maybe we could have a couple other shortcuts here which are then explained in a small dialog box. I imagine a small icon with a keyboard logo. It could be a component that we could reuse on other parts of the website where we use shortcuts.

[alexanderstephan]

Maybe one other note. Commit messages should not end with a dot (.) and use sentence case.

[barisgul15]

I think that this is a convenient feature. 👍 But we should document that shortcut somewhere, right? Maybe we could have a couple other shortcuts here which are then explained in a small dialog box. I imagine a small icon with a keyboard logo. It could be a component that we could reuse on other parts of the website where we use shortcuts.

While implementing that I was also asking myself how will user gonna know that popup chat can be closed by pressing esc but could not think of a convenient idea. I think your suggestion makes sense. If its ok for you, I can create a new issue about it and work on it?

[SebiWrn]

Works as expected