[fn param hints] Callback function notation is hard to understand.

[RaymondLim]

1. In a js file type $(this).ajaxSuccess(.
2. Invoke param hint with Ctrl+Shift+Space.

Result: function(function(Object, [Object]):jQuery.Event, function():Object):Object handler shows up in param hint.

Expected: ajaxSuccess has only one parameter with the name of "handler". So its type should not be a complicated function notation as shown in the above result.

[pthiess]

@RaymondLim We don't put it into this sprint as the card isn't right now.

[RaymondLim]

Fixed by @dloverin in pull request #4637.