When accessing `/gui`, none of the resources can be reached.
The log hints at why:

    Feb 14, 2014 11:27:38 AM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler 
    INFO: Mapped URL path [/gui] onto handler '/gui'
    Feb 14, 2014 11:27:38 AM org.springframework.web.servlet.handler.AbstractUrlHandlerMapping registerHandler 
    INFO: Mapped URL path [/gui/**] onto handler of type [class org.springframework.web.servlet.resource.ResourceHttpRequestHandler]

Could it be this resourcehandler mapping?