Doesn't seem to happen for previews of sites.

The visual appearance of the reconnect error page we see when there are problems with the internet connection can be significantly improved.

• Clear steps to reproduce the issue:
  Start the app without an internet connection

For example, if a user is in topic narrow and edits a message's topic then it would be moved do a different narrow. We should probably display a message in the footer if this happens.

Using https://github.com/kowainik/co-log