Add .jshintrc & clean up Enyo source code to cleanly run through JSHint 1.1.0 with provided .jshintrc file.
Fix a couple of "len" variable leak problems detected with jsHint too.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)
Fix enyo.Object.bindSafely to correctly handle the first argument -- a cut&paste error from the enyo.bind implementation which uses two leading arguments instead of one.

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)