* Include the conventional copy & paste installation instructions that
most Ubuntu (and derivatives) users expect.
* Request that users test their operating system's app store, because
a potential Appstream bug would be highly visible and would negatively
affect initial user impressions. Such a hypothetical bug should
ideally be found and fixed before Ubuntu 22.10's freeze, and certainly
before Debian 12's.
* Mention the backports repository, because otherwise users will
manually install packages for sid/unstable/testing/bookworm/12 onto
stable/bullseye/11. These packages will be nonfunctional, will
malfunction, or will break the other package's dependencies.
* Remove link to Developer Information Tracker, because it may also
mislead users into creating FrankenDebian, and because it is not
supposed to be a user-facing page.
For instance, the NetworkManager Plasmoid uses these margins for its
ListView. It looks probably better than without margins (after removing
paddings with scroll page).
* The licensing badge does not work anymore and the licensing topic is more
complicated to fit into a badge anyways
* The release badge does not look good on its own and is redundant with
GitHub's own UI since they've reworked it
Otherwise the wizard would immediately start when accessed via settings
which is not very nice. Of course the instructions in the welcome page need
to be slightly adjusted.
It is actually just the normal marging/padding Plasmoids normally have but
with the scroll bar it doesn't look good.
The margins would be automatically collapsed if the scroll view was the
immediate content item. However, that's not the case so we need to set the
according property manually using `Plasma.Representation`.
* Provide icons for command link buttons because it looks rather bad when
some of them are missing in the user's icon theme and are therefore not
displayed at all
* Add icons to lists for bundling icons
