text: Title: Show in the logs what matched for tag/doc type/correspondent
  Body: **What:** Add a section in the logs menu (or possibly in the document details section) that shows what in the particular document triggered the assignment of the tag/doc type/correspondent.
  
  **Why:** There have been occasions, even in my very short usage, where a tag was assigned but I couldn't find any of the match criteria in the document. It would be useful to know why certain things matched so that you could tweak your match statements. I'm sure that those of us that use regex would certainly appreciate it.
  
  I've had a look at the logs in the interface as well as the docker logs but I don't see anything there that provides any information about what string was matched for the assignment.