Upgrade handlebars from 1.0.9 to 1.0.11.

There were some notable bug fixes between those versions.  We are
still far behind the current version (1.3.0).

For the node stuff, I used npm update.

Then for static/third/handlebars/handlebars.runtime.js, I copied
the node version then added back the copyright.

(imported from commit 59bcd2c52540ff88bba2f90cced809cfcb8cd92b)

node_modules/handlebars/global-test.js

@@ -0,0 +1,18 @@
+var Handlebars = require('./lib/handlebars');
+
+Handlebars.registerHelper('test_helper', function() { return 'found it!' });
+Handlebars.registerPartial('global_test', '{{another_dude}}');
+
+//var template = Handlebars.compile('{{test_helper}} {{#if cruel}}Goodbye {{cruel}} {{world}}!{{/if}}');
+var template = Handlebars.precompile("Dudes: {{#if foo}} {{#if nested}} {{> shared/dude}} {{/if}} {{> global_test}} {{/if}}");
+console.log(template);
+
+return;
+
+console.log(
+  template({cruel: "cruel", name:"Jeepers", another_dude:"Creepers"}, {
+    helpers: {world: function() { return "world!"; }},
+    partials: {'shared/dude':"{{name}}"}
+  }));
+
+console.log(template);