Add empty IVerb marker interfaces to be able to declare intent on Request DTO's
Have the QueryString generator on ToUrl* auto-gen routes respect JsConfig.EmitLowercaseUnderscoreNames
Add AppHost.OnExceptionTypeFilter overload to customize how exceptions are merged into the ResponseStatus

Added built-in handling of ArgumentException to inject a field error so
it shows up against the related field error on the client.
Add validation test page to RazorRockstars.Console to debug ajax + html form validation handling
Update dlls