Plagiabot provides an API for testing articles with the Turnitin engine (see https://en.wikipedia.org/wiki/Wikipedia:Turnitin). Here is an example of the API output for a specific article: http://tools.wmflabs.org/eranbot/plagiabot/api.py?action=suspected_diffs&page_title=Rajesh_Khanna&report=1. (It returns an array of 1 or more potential violations.)
It would be great if the Copyvio Detector tool (https://tools.wmflabs.org/copyvios/) had the option of using Turnitin as well as Yahoo BOSS for detecting possible copyright violations.
Acceptance criteria:
* In the "Copyvio search" options, add a new option for "Use Turnitin" (off by default for now)
* If "Use Turnitin" is checked, add an extra box to the output (between the generation-time div and the cv-result div) that shows the results from the Plagiabot query.
* If there are no matches from the Plagiabot query, the div should use class=green-box and say something like "Turnitin found no matching sources."
* If there are matches from the Plagiabot query, the div should use class=red-box and say something like "Turnitin found sources that may have been plagiarized. Please review them." It should then include output similar to the Source column at https://en.wikipedia.org/wiki/User:EranBot/Copyright/2#Added (but in a nicer format).
* Do not feed the results from Plagiabot into the Copyvio Detector's list of sources to check.