Ignore JavaScript validation and execution if runScripts flag is false 

I was unable to suppress the validation and execution of JavaScript embedded within an HTML file.  As it turns out the feature did not seem to be implemented (as documented in the website).  So, I took a swag at an implementation and was able to use the existing documented runScripts flag and evaluate it during the window evaluation function.

In the future a more granular runScripts could be provided.  I saw the need for executing/validating some JS but not others.  However in the meantime, this will suppress any JS from validating or executing from an HTML page zombie is evaluating.

Thanks,

Tony