OO-2776: persists the default configuration in course element configuration before switch auto / manual configuration

OO-2732: implement a matchInteraction with drag and drop (fallback to click possible) with slightly enhanced editor and word export

OO-2772: replace the all answers score per a default value which make more sense than -1.0, fix equal method of the gap wrapper

OO-2756: add check to show only once the user name in the  small user view if the admin configured it wrong, fix css class

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

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