OO-291: remove overkill memory optimization

src/main/java/org/olat/group/ui/main/BGTableItem.java

@@ -206,7 +206,7 @@ public class BGTableItem {
 		
 		public BGShort(BusinessGroup group) {
 			key = group.getKey();
-			name = group.getName() == null ? null : group.getName().intern();
+			name = group.getName();
 			maxParticipants = group.getMaxParticipants();
 			waitingListEnabled = group.getWaitingListEnabled() == null ? false : group.getWaitingListEnabled().booleanValue();
 			autoCloseRanksEnabled = group.getAutoCloseRanksEnabled() == null ? false : group.getAutoCloseRanksEnabled().booleanValue();
@@ -214,7 +214,7 @@ public class BGTableItem {
 		
 		public BGShort(BusinessGroupView group) {
 			key = group.getKey();
-			name = group.getName() == null ? null : group.getName().intern();
+			name = group.getName();
 			maxParticipants = group.getMaxParticipants();
 			numWaiting = group.getNumWaiting();
 			numOfOwners = group.getNumOfOwners();

src/main/java/org/olat/group/ui/portlet/BusinessGroupEntry.java

@@ -34,12 +34,12 @@ class BusinessGroupEntry {
 	private final Date creationDate;
 	
 	public BusinessGroupEntry(String name, Date creationDate) {
-		this.name = name == null ? null : name.intern();
+		this.name = name;
 		this.creationDate = creationDate;
 	}
 	
 	public BusinessGroupEntry(BusinessGroup group) {
-		this.name = group.getName() == null ? "???" : group.getName().intern();
+		this.name = group.getName() == null ? "???" : group.getName();
 		this.creationDate = group.getCreationDate();
 	}
 	

src/main/java/org/olat/repository/portlet/RepositoryPortletEntry.java

@@ -64,7 +64,7 @@ public class RepositoryPortletEntry implements PortletEntry<RepositoryEntryShort
 		
 		public REShort(RepositoryEntry entry) {
 			key = entry.getKey();
-			displayname = entry.getDisplayname().intern();
+			displayname = entry.getDisplayname();
 			type = entry.getOlatResource().getResourceableTypeName();
 			statusCode = entry.getStatusCode();
 		}