disable role occurence, repeat task, interrupt task and character affectation in tasks in unity mode

Task unity mode + fix on clear character in task reward on character delete + fix en translate of 'plan de relance'

margin in mat-menu / new tooltips / replace purger by effacer / fix add role dialog message  / zoomin and zoomout with buttons / click on a piece show details + remove icon button to show detail / set font-family everywhere