Use version of Soy from closure-templates NPM package

Hello nicks, 

Please review the following commits I made in branch 'dpup'.

0455f9016c85884c2d9d0c9b4ae8e9f3a425970d (2013-04-03 08:48:05 -0700)
Use version of Soy from closure-templates NPM package

R=nicks