Log time, parse POST API result, log matches to DB

* Add method to parse wiki timestamps for better logging using datetime
  objects
* Log to database with sqlalchemy when matches are made
* Misc name/typo fixes
* Use new Flow ntmetadataonly flag to get metadata for Flow API POST
  requests, parse it to get the new post revision id to log
* Parse API POST results to get revision ids, timestamps (if possible)
* Read time-of-previous-run from a file, save new timestamp for current
  run
* Tweak parameters for API calls