More detailed output for WFO module

[itsrachelfish]

The WFO module should be a bit more verbose when creating a digest of activity within the last 5 minutes. Currently it only says a total of the number of posts made. It would be nice to include additional information like the number of unique users that posted and the number of threads posted in. When there are multiple posts but only in a single thread, there should be a link to that thread specifically.