+ fix optional exceptional circumstances for editing
+ [OEM-177] make change for optional element work with 1.6
+ update RELEASE file
+ [OEM-177] fix for elements not saved in an application for editing
+ [OEM-177] further fix for missing elements when saving partially complete form
+ updated RELEASE file
Merge branch 'master' into develop

Conflicts:
	RELEASE
	controllers/DefaultController.php