SAK-26249 Syllabus: Calendar setting doesn't take the first time you save


git-svn-id: https://source.sakaiproject.org/svn/syllabus/trunk@309663 66ffb92e-73f9-0310-93c1-f5514f145a0a
SAK-26250 Syllabus: you can add item to calendar without dates


git-svn-id: https://source.sakaiproject.org/svn/syllabus/trunk@309664 66ffb92e-73f9-0310-93c1-f5514f145a0a