style tweak (loading)

don't change border size, use background colour.

when border is on a table,
 the whole table redraw-bumps for every loading transition
T:H:Builder - rebless idempotification

while poking bug https://rt.cpan.org/Ticket/Display.html?id=75390
style - easier on the eye

better contrast to black
less stark for large areas
Test::HTtapTP - flag to enable CORS

http://enable-cors.org

postpone $Test->init_for_web until import, so flags are there;
croak intentional (default) CORS failures out to the script
check the request_method on incoming requests, accept GET and OPTIONS
set extra headers on GET and OPTIONS
JS - attempt to notice CORS blocks
style - fix .show mode

controls obscured first line of text
JS - pass info in GET not HTTP headers

intention is to
  avoid CORS preflight OPTIONS query
  because they are blocked on some nearby servers
  (blocking is to avoid info leakage and DoS..?)

also fix tap-poc to pick up @id||@name
  from the new place,
  (noting lack of API support)
JS - supply GET query data

accept GET query data from parents in DOM
encode it as JSON
  could also accept CGI-encoded,
  but I found the JSON decoding function first

decorate the test.html with a sprinkling
  unused in the CGI, but visible in %ENV
JS - version leapfrog