work pre & post Meteor UI

The fix was a lot easier than I suspected :>  The error in Meteor UI was actually because the Helper functions were missing, this is because of a difference of where the Handlebars namespace is packaged between versions.  Fortunately both package names (handlebars, templating) exist in both versions, so it was easy to have a package.js which will make the full package work with pre & post Meteor UI.

The HTML fix is just so that the examples dir compiles directly under Meteor UI.