Fix issue with busy response to certain message types not respecting busy response settings such as wildcard resolution
Separate busy response block from autoresponse, and use busy_message() function to avoid duplicate code
Do not autorespond when incoming message is to everyone (null to_id)
Oopsies, misplaced busy response block
Bug Fix: Don't use an empty string for the session name/label of autoresponse stuffs, that tries to log to nameless file.