In mobile view of meetings module, participants section should be removed and move to the details section.

* Mobile, the participant section is removed completely and a "{n} participants" line is added to the Meeting details.
* After clicking on "{n} participants" button, it shows Begin of the deletion allEnd of the deletion the Begin of the insertionexisting participantEnd of the insertion Begin of the deletion participants in aEnd of the deletion modal Begin of the deletion with a "Add participant" button on that overlay.End of the deletion
* Begin of the insertionA separateEnd of the insertion Begin of the deletion WhenEnd of the deletion "Add participant" button Begin of the insertionis added, showingEnd of the insertion Begin of the deletion clicked, it showsEnd of the deletion the Begin of the insertionsame modalEnd of the insertion Begin of the deletion existing add participant modal.End of the deletion