Fix: current_command_args contains command

@thinkyhead
Hi Scott,
your code from a0f362c7@thinkyhead is great, but you forgot to skip the
command.
Symptom `M117 Test`shows `M117 Test` on LCD instead of `Test`.

see also
https://github.com/MarlinFirmware/Marlin/commit/a0f362c735401ebbcd95de3f
6f8e3c2f17ecc770 lines 941, 2851 and so on

Greetings and welcome back

Jochen

Remove obsolete STEPS_MM_E setting

more suitable display format for delta printer

Repair N in ADVANCED_OK

Rc bug fix

Replace the "ok" in M280, M301, M304, M851 with output not including …

Drop the experimental Configurator

Sanity-check deprecated options replaced by SPI_SPEED

Use next open E connector for Y2/Z2

Remove references to marlinfirmware.org

- Include aligned comment about new SDSUPPORT behavior

Fix handling of spaces in GCode

Development moved to https://github.com/thinkyhead/MarlinConfigurator

The domain is gone and doesn’t redirect, so for now show no URL on the boot screen.

Rename fpos_t to avoid libc conflict

Fix AUTOTEMP documentation in configs

Addresses issue #2715

Send the correct line number.
If no N was in the command - non't send an N.

Replace the "ok" in M280, M301, M304, M851 with output not including an "ok"
to avoid senting two "ok"s for a single g-code.

Doing the same for M105 would break the input filters of the hosts.
For M105 the other "ok" is omitted.

Rc bug fix

Rc bug fix

Instead of changing SDEXTRASLOW variable to a slower speed,  the new
SDULTRASLOW is used for rigidbot panel.

Rc bug fix

Rc bug fix

Fixing Rigidbot LCD Panel Support