Changed graph/index.html to load www.google.com/jsapi over https instead of http.  This fixed a user-visible failure.
Changed graph/index.html to load www.google.com/jsapi over https
instead of http.  This fixed a user-visible failure.

R=neil.fraser@gmail.com

Review URL: https://codereview.appspot.com/32520043

git-svn-id: 2cf55447cea94972d775c94cce66c944ede0459c@1521 c400ca83-b69d-9dd7-9705-49c6b8615e23

Khan/blockly,Khan/blockly