Make sure that the reply message is hidden if a user is ignored.

This will hide the content when a user ignores and re show it if unignored in the same session.

Note: If the client is restarted the rely will be blanked as the server refuses to send the message. However if unignoring a restart is currently required to get the full timeline back. This can't be trivially fixed as it takes a bit of time for the server to deal with the unblock and allow the message to be downloaded. With no signals available to jump off we'd just have to poll the endpoint which considering this is not going to happen often seems like a bad idea for minimal gain.

Closes #657 (closed)