Add a information on the jump that is a special jump

Add the "update" feature on the jump.

Back/skydiveLogs-api.DomainBusiness/JumpService.cs

@@ -64,9 +64,14 @@ namespace skydiveLogs_api.DomainBusiness
             return _jumpRepository.GetById(id);
         }
 
-        public void UpdateJump(int id, Jump jump)
+        public void UpdateJump(int id, Jump updatedJump)
         {
-            throw new NotImplementedException();
+            var myJump = GetJumpById(id);
+            myJump.IsSpecial = updatedJump.IsSpecial;
+            myJump.WithCutaway = updatedJump.WithCutaway;
+            myJump.Notes = updatedJump.Notes;
+
+            _jumpRepository.Update(myJump);
         }
 
         #endregion Public Methods