OO-821: fix some RSs in Project broker by import of "responsibles"

src/main/java/org/olat/course/member/wizard/ImportMemberMailController.java

@@ -71,7 +71,7 @@ public class ImportMemberMailController extends StepFormBasicController {
 			mailTemplate = BusinessGroupMailing.getDefaultTemplate(defaultGroupType, group, getIdentity());
 		} else if(defaultRepoType != null) {
 			mailTemplate = RepositoryMailing.getDefaultTemplate(defaultRepoType, repoEntry, getIdentity());
-		} else if(hasCouresRights(e)) {
+		} else if(hasCourseRights(e)) {
 			mailTemplate = RepositoryMailing.createAddParticipantMailTemplate(repoEntry, getIdentity());
 		} else {
 			mailTemplate = BusinessGroupMailing.getDefaultTemplate(MailType.addParticipant, null, getIdentity());
@@ -81,8 +81,8 @@ public class ImportMemberMailController extends StepFormBasicController {
 		initForm (ureq);
 	}
 	
-	private boolean hasCouresRights(MemberPermissionChangeEvent e) {
-		return ((e.getRepoOwner() != null && e.getRepoOwner().booleanValue())
+	private boolean hasCourseRights(MemberPermissionChangeEvent e) {
+		return e != null && ((e.getRepoOwner() != null && e.getRepoOwner().booleanValue())
 				|| (e.getRepoParticipant() != null && e.getRepoParticipant().booleanValue())
 				|| (e.getRepoTutor() != null && e.getRepoTutor().booleanValue()));
 	}

src/main/java/org/olat/group/manager/BusinessGroupMailing.java

@@ -46,7 +46,7 @@ import org.olat.group.ui.main.MemberPermissionChangeEvent;
 public class BusinessGroupMailing {
 
 	public static MailType getDefaultTemplateType(MemberPermissionChangeEvent event) {
-		if(event.size() == 1) {
+		if(event != null && event.size() == 1) {
 			List<BusinessGroupMembershipChange> changes = event.getGroupChanges();
 			if(changes.size() == 1) {
 				BusinessGroupMembershipChange change = changes.get(0);

src/main/java/org/olat/repository/RepositoryMailing.java

@@ -49,7 +49,7 @@ import org.olat.group.ui.main.MemberPermissionChangeEvent;
 public class RepositoryMailing {
 	
 	public static Type getDefaultTemplateType(MemberPermissionChangeEvent event) {
-		if(event.size() == 1) {
+		if(event != null && event.size() == 1) {
 			if(event.getRepoTutor() != null && event.getRepoTutor().booleanValue()) {
 				return Type.addTutor;
 			} else if(event.getRepoParticipant() != null && event.getRepoParticipant().booleanValue()) {