Resolve "Student cannot see their own submissions from previous years"

Closes #167 (closed)

src/main/java/nl/tudelft/submit/controller/EditionController.java

@@ -155,10 +155,12 @@ public class EditionController {
 					.filter(r -> r.getEdition().getName().toLowerCase().contains(filter)
 							|| courses.get(r.getEdition().getId()).getName().toLowerCase().contains(filter)
 							|| courses.get(r.getEdition().getId()).getCode().toLowerCase().contains(filter))
-					.collect(Collectors.toList());
+					.toList();
 		}
 
-		model.addAttribute("roles", roles);
+		Map<Boolean, List<RoleEditionDetailsDTO>> partitionedRoles = roles.stream()
+				.collect(Collectors.partitioningBy(x -> x.getEdition().getIsArchived()));
+		model.addAttribute("roles", partitionedRoles);
 		model.addAttribute("courses", courses);
 		model.addAttribute("create",
 				SubmitEditionCreateDTO.builder().cohort(new CohortIdDTO()).course(new CourseIdDTO()).build());