BINDERY_ADMIN_USERS lists the admins of the cwa and proxy modes. Only an
admin can change the global settings and the global rules, and read or
change personal.ini. Without a list, each user is an admin.
Plain HTML, CSS and JavaScript modules, with no build step. Hash routes
and relative URLs make it work under any path. The job list is polled:
every 2 seconds while a job runs, and less often otherwise.