OO-2012: use the formatter dedicated to survey and self if need in the replace process in QTI course elements

OO-725 remove unnecessary methods and variables, fixing visibility of members, fixing controller chain leaks

OO-725 use title and desc from repoentry instead of own one, move files from media to master dir, bautify runtime, reload root controller on breadcrumb-click

OO-725 implement copy of resource, beautify caption chooser, fix controller leak, reload transcoding list on segment change

OO-2008: check the length of selections, show a validation error if the user name column is not selected