Update tests and baselines for sumstats docs
Update docs and tests for a recent change to detect-MHR.bro
Fix typos in sumstats doc and update doc test
Merge remote-tracking branch 'origin/fastpath'

* origin/fastpath:
  Fix typos in sumstats doc and update doc test
  Update docs and tests for a recent change to detect-MHR.bro
  Update tests and baselines for sumstats docs
Fixing warnings during doc build.

Includes adding a stub file that has been missing for a while already.