added access variable to exams soo we can distinguish private, public and confidential exams and also bugfixes and improvements

src/components/ExamEditor/SettingsEditor/writing/index.tsx

@@ -23,7 +23,7 @@ const WritingSettings: React.FC = () => {
     const {
         minTimer,
         difficulty,
-        isPrivate,
+        access,
         sections,
         focusedSection,
         type,
@@ -81,7 +81,7 @@ const WritingSettings: React.FC = () => {
             isDiagnostic: false,
             variant: undefined,
             difficulty,
-            private: isPrivate,
+            access,
             type: type!
         });
         setExerciseIndex(0);
@@ -134,7 +134,7 @@ const WritingSettings: React.FC = () => {
                 isDiagnostic: true, // using isDiagnostic to keep exam hidden until the respective approval workflow is completed.
                 variant: undefined,
                 difficulty,
-                private: isPrivate,
+                access,
                 type: type!
             };