Regression - Resolve console error about shortcuts.js not found

The file shortcuts.js was renamed to shortcut.js in wicket.contrib.input.events

Shortcuts do not work for header actions and warning is logged in the Log when opening the console

[INFO] [talledLocalContainer] 14.04.2014 12:05:42 WARN http-bio-8080-exec-9 [PackageResource.sendResourceError:376] resource [path = wicket/contrib/input/events/shortcuts.js, style = null, variation = null, locale = null]: Unable to find resource (status=404)