removed an unused web filter (UrlRegexpContextFilter)
moved a series of methods from ContextFilter to WebAppUtil, where they make more sense; changed one of them to be a static method
made private some methods of ContextFilter and WebAppUtil because they were not used outside of their classes
introduced a constant for the "control" mount point
moved public fields and methods from the ContentUrlFilter to the OfbizContentAltUrlTransforms and made them private (since they are only used by this class)
no more need for the UrlServletHelper to extend the ContextFilter
Minor