Load more pipeline log lines (500 => 5000)

[runephilosof-karnovgroup]

I was able to load 3500 lines without problems (it seems the browser goes from 5 MB memory usage to 10 MB).

This way, we will hit the boundary less often, lowering the need to get lazy loading #2653 fixed

[qwerty287]

I think this should be implemented using some kind of pagination with "show more" button or something like this.

[runephilosof-karnovgroup]

If 5000 lines is displaying fast enough and not consuming too much browser memory, then I think this should be merged.
It is the simplest and less annoying implementation for the users. It works with the scroll to line implementation.
I think a show more button would be annoying, if you need to use it too often, because you often have more than 500 lines. But could be implemented for cases where there are more than 5000 lines.

[6543]

well the underlaying issue still remains ... I consider this a workaround and we should revert it asap lazyloading is implemented.

if we are going to merge this or on ... I leave it to the more frontend-related maintainers ;)