updated bookmarklet script to point to /script/js/bookmarklet.js and use a proper http uri
enabled /api/, /api/add/  URLs
updatd the bookmarkelt/views.py to properly inject the DOI and URL into the template context
Fixed some errors in the pyjade compilation.  The Django template syntax wasn't quite correct causing DOI and URL to not be tested or filled in properly in the rendered template.
re-rooted the /add/ URL to be /api/add/ in bookmarklet.js
rooted the css  files to be under /static/css instead of /css