Brian Turchyn

In b19ab98, the updating of the `last_run` table was migrated to Postgres-native logic by using `ON CONFLICT` to perform the update rather than an insert. This is a great change...

The `/report` command was removed in a5c4838, but some references to it in the code still remained. This cleans those references up.

Adds the ability to attach files to emails. This is useful if a previous step generates a report that you then want to email out. I extracted out the building...