jQuery Validation: Tightened up ValidationOptions

Using a combination of the source code and the documentation at http://jqueryvalidation.org/validate/ I've tightened up the typings on jQuery Validation ValidationOptions.  NB ```success``` remains as ```any``` because (AFAIK) it's not possible to model alternate overloads in an interface with TypeScript ( https://typescript.codeplex.com/workitem/1893 ).