OO-2430: update paypal libraries, fix configuration trailing tab, fix return from paypal, fix transaction sort by date and status in administration, fix missing icon...

OO-2429: move the foreign key from identity to user, remove double mapping of identity, add more unit tests for invitation, unify the methods to create the user and identity

OO-2329: reviewers must evaluate the user and only after they can see the comparison and the auto evaluation (if allowed)

OO-2329: always show all axis in radar chart, better layouting of the steps labels, wording, anonym in segment view and in comparison charts...

OO-2424: rework the hierarchy of the assessment tool, more filter options, fix notifications path...

OO-2399: fix javascript error in extendedTextInteraction, add print button for QTI 2.1 results in assessment tool, only show response of extendedTextInteraction, uploadInteraction and drawingInteraction because there are no solution

OO-2329: add compare view (only anonym), fix submit button, fix reload of data after submission of an evaluation...

OO-2368: better handle the behavior of the paint app if the mouse go out of the canvas, prevent IE to drag the background image which breaks the paint app...

OO-2329: fix save button of text input, beautify margin for sliders and radio buttons, allow more than 10 characters for labels...

OO-2421: enhance the cycle detector to only check expert rules method which have a risk to create a cycle

OO-2419: fix issue with the increment of attempts in a QTI 2.1 course element where the user doesn't reload the course element