Smoothieware/Smoothieware

add designator to motordriver messages

ignore M0, as setting feed hold in non grbl mode basically stalls eve…

…rything as trhere is not way to release it

remove on_gcode_execute from Stepper

Fix/http upload

…y in http_header_preflight

…x/http_upload

Allow remote file upload (CORS)

Implement preflighted requests (OPTIONS) to allow remote files upload
(CORS).

-
https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Preflighted_requests

- https://www.w3.org/TR/cors/

Implement preflighted requests (OPTIONS) to allow remote file upload
(CORS).

-
https://developer.mozilla.org/en-US/docs/Web/HTTP/Access_control_CORS#Preflighted_requests

- https://www.w3.org/TR/cors/

add option to save G92 on M500

attempt to make M501 use less stack.

  refactor to where and when it is processed, and make it use on_gcode event

make plan9 optional build, not built by default use make PLAN9=1 to b…

…uild it

refactor Network to remove most of the statics

remove test for probe height

…to-handle-Sxxxx

handle S1000 on its own line in spindle module

Allow S1000 on a line by itself or in mutli gcode lines

…be ignored.

  TODO the spindle module should be updated to handle a received Snnn by itself

Fix jog screen to use WCS as well

make Panel display workspace coordiantes not machine coordinates