Remove some accidentally added js dependencies.

Index.html should not include bookmarklet (should it be moved to separate directory?) Initialize parse must be included.
Pull tags from Url when tagging a page.

Instead of retrieveing all tags via GET variables, just send the Url-id and
then have the page pull the associated tags. This allows for parallel
processing of the page (we can redirect the user to our page when saplo is
parsing tags), and simplifies the public api.