Revert to OUJS for script sources (#81)

* Some browsers are starting to implement https://github.com/blog/1482 and thus preventing web demo from running. *express-brute* can still prevent the demo from running however with some more recent caching changes on OUJS it should be less problematic.
* Put in some basic boiler plate HTML.
* Change to strict MIME content type... this may prevent older browsers from executing it but it's the default registered type.
* Remove script from GH page branch repo ... may be able to copy repo sources here if need be and exec here if there are issues but keeping editability references for now.

NOTES:
* Thanks to @ywzhaiqi for the notification in #80

Applies to #64 and closes #80 

Auto-merge