Change exception 403 to 409 and fix indentation in the javascript

SoObjects/Appointments/SOGoAppointmentObject.m

@@ -475,7 +475,7 @@
         [reason appendString:@", "];
     }
     [unavailableAttendees release];
-    return [NSException exceptionWithHTTPStatus:403 reason: reason];
+    return [NSException exceptionWithHTTPStatus:409 reason: reason];
   }
   [unavailableAttendees release];
   return nil;