removed hardwired version number from phing installation step.

refs #250
Oh, hey, we load Modernizr and then...DON'T USE IT AT ALL.
rm Modernizr-specific and unused no-js/js class
rm Modernizr and associated classes
Merge pull request #258 from Trott/rm-dead-code

Oh, hey, we load Modernizr and then...DON'T USE IT AT ALL.