on browserid.org, set origin in user.js to a proper origin. This was breaking...

on browserid.org, set origin in user.js to a proper origin.  This was breaking code that expected it to be an origin, like /signup which invokes the stage_user api, which now validates the 'site' parameter is a properly formed origin.  issue #1429

Conflicts:

	resources/static/shared/user.js