FE render system messages for new feed item with link

[elatif2020]

I was thinking originally to add a link to that feed item the same as we have with the url query parameter, but maybe this is not the best solution.
If this item is already rendered we can just make it active.
Otherwise the best would be to scroll down all the way to that item. We should make the scrolling down gradual and can show the loader as we do for loading more items.

@elatif2020 I see in the BE ticket that feed item title should be a link to the feed item.
How should it work? Clicking the title we should make that feed item active? What should happen if that feed item is not loaded yet (e.g. it is in the next batch of data for feed item)? Should we display such item at the top of the list under pinned items?

Originally posted by @andreymikhadyuk in #1954 (comment)

If the item is deleted - remove the link and add "(deleted)" at thee end

[andreymikhadyuk]

depends on https://github.com/daostack/common-backend/issues/2068 and https://github.com/daostack/common-backend/issues/2069.