[recensor] Multi-message whitelist mode

[chnaski]

I'd like for members to be able to add comments to their photo after they've uploaded it when i have a regex pattern that disables all but photos, links to images, and photos uploaded with comments.
pattern: .recensor only-images pattern ^\{attachment:.*\.(?:png|jpg|jpeg)\}|https?://[^\s/$.?#].[^\s/]*/[^\s]+