Some informers should disappear automatically when information is outdated

[AlexTr]

Once video-post is sent to publishing, the informers correctly tells to wait, but intuitively I want to just keep the page open and wait until it changes. it doesn't change even if the video is published until I reload the page, so it's nearly impossible to guess. it owuld be nice to force-reload the page when video processing is complete. And also to add a "waiting" spinner to the informer.