Background

My assumption is that currently we only have video level filtering where the operator has to somehow manually intervene to mark videos as filtered. This is fine, but

Proposal

Add a filtering boolean property to channels which works, as follows

• when a channel is first registered, a default value is set, and this should be configurable. This allows the operator to have a defensive or optimistic display policy.
• when true, it is as if all the videos are filtered, i.e. their filtering flag is set, and obviously the channel itself is filtered.
• when false, it has no impact.