modernizr.js is not modified because it's not our code.
En passant fixes:
* Delete two scripts that depended on a Yahoo service that
appears no longer to exist.
* The PhantomJS website no longer has a leading www.
* One script needed correction to *work* in strict mode.
* One script would only exit if a page loaded successfully.
(There may be other instances of this problem, this is the
one I noticed.)
Since this example was written the phantomjs home page has been redesigned and the targeted ID no longer exists. This tweaks the example so that it can again find content to report.
* It includes a script in the page
* It uses a callback to ensure any code dependent on the include runs afterwards
* It uses the signal "javaScriptAlertSent" to do the trick (is there another way to be notified of the "onLoad" event from outside the page context?)
* It uses a "private" slot "_appendScriptElement" to pass the script url in the page context (is there a better way?)
