Merge remote-tracking branch 'origin/OpenOLAT_14.1'

Conflicts:
	src/main/java/org/olat/course/certificate/restapi/CertificationWebService.java
	src/main/java/org/olat/course/db/restapi/CourseDbWebService.java
	src/main/java/org/olat/course/nodes/co/COWebService.java
	src/main/java/org/olat/modules/curriculum/restapi/CurriculumElementsWebService.java
	src/main/java/org/olat/modules/fo/restapi/ForumCourseNodeWebService.java
	src/main/java/org/olat/modules/fo/restapi/ForumWebService.java
	src/main/java/org/olat/registration/restapi/RegistrationWebService.java
	src/main/java/org/olat/restapi/group/LearningGroupWebService.java
	src/main/java/org/olat/restapi/group/MyGroupWebService.java