Fix for Turnitin Assignment inbox so it can now be sorted by similarity score and grade
Performance logging of curl calls (provided by Androgogic).
Global tiipp variable added so Androgogic offline mode doesn't crash moodle assignment.
Hard errors changed to soft errors when the cron is run.
Remove submissions after 5 submission attempts if assignment exists in Turnitin.
Fix for incorrect assignment id search when refreshing rubrics in PP.
Change ordering of submissions to get most recent first in update scores.
Inclusion of grade lib file moved to top of lib file due to isolated reports of cron failing.
Unused function check_user_class_membership removed from turnitintooltwo_user.class.php
Multiple attempts are handled properly.
Comments added for editing $submissions in get_links()
Allow for attempts when grading - get latest grade rather than just looking for single record.
Ignore NULL grades when working out overall grade in PP
Remove duplicate refresh row call by only binding one event and delete row and re-add when row is refreshed for correct sorting
Docs & version numbers incremented.
Open DV in Firefox in a frame instead of iframe to fix resizing and non-downloadable file bugs.
Open DV from PP in Firefox in a frame instead of iframe to fix resizing and non-downloadable file bugs.
Incorrect calculation of average grade in PP fixed.
Fixed incorrect rounding of average grades in PP
Revert "Fixed incorrect rounding of average grades in PP"

This reverts commit 81ef871c970039a341beb33f660a66bca95be6ae.