Livestream window should not overlap other elements

[luisa-beerboom]

Closes #2367

Also restyles some views that didn't use standard OpenSlides card styling (category-detail, category-list-sort), please have a look at category detail in particular when testing

[emanuelschuetze]

• Please add a border bottom line for the last table line
• Add more bottom space in settings view (e.g. motion settings)

[bastianjoel]

I would prefer adding the spacing globally to a container element.

[luisa-beerboom]

I would prefer adding the spacing globally to a container element.

I tried that it did the following to the list views:

I don't think that is desirable

[luisa-beerboom]

@emanuelschuetze

1. I took out the bottom lines for the list views specifically because it would make the new spacer look like there is some artefact data that isn't being displayed properly. Do you have an idea how I may avoid that situation while keeping the bottom-line, if so I can do that.
2. Why should the meeting settings get even more spacer? They already have the standard 60px spacer that is necessary to accommodate the livestream window?

[rrenkert]

Can we detect the state of livestream, applause icon and virtual helpdesk icon? The empty space if none of them are visible looks broken.
A bottom border on the last element does not look like a broken item if the icons/livestream window are present.

[Elblinator]

like raimund said, the bottom border and the additional space should only be present if the livestream window is activated, but they should be both present for-list views.

this is how a singular setting-page looks like if the livestream is present:

every mat-card should end and then have a margin to the end of the page (independent of the live stream)
Example:

[rrenkert]

Seems to be the wrong container for the spacer. This one creates a second scrollbar on smaller screens.
Tested in brave (chromium based).

[luisa-beerboom]

Had to revert the meeting part of #2230, I think I fixed it again but please check if there are weird scrolling bugs anywhere in the meeting
@Elblinator @rrenkert

The requested changes are implemented.