Don't clobber Date.now

[GoogleCodeExporter]

It looks like the locally defined Date.now() is only used in a few places. 
Normally, Date.now() returns the EPOCH ms but Date.js redefines it to return 
new Date().

Instead of 
Date.now = function() { return new Date(); }

I would do something like
Date.nowAsDate = function() { return new Date(); } 

and update calls to Date.now() accordingly.

ref
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects
/Date/now

Original issue reported on code.google.com by chad.arm...@cloudsherpas.com on 18 Jul 2014 at 3:59