OO-2756	: add progress bar and percent value for score, add section summary for the questions correct, answered, and not answered

OO-2765: fix some issues with the qti plugin, hottext, gap related to copy / paste of the html content of the editor

OO-2757: check keys and type in test course element to prevent error due to switch from test with QTI 2.1 and 1.2

no-jira: selenium tests for QTI 2.1 editor, 2 matches with different settings, scoring and with feedbacks