* Unify M600 and M125 pause features
* Cleanup per thinkyhead's comments
* Rename filament_change_menu_response to advanced_pause_menu_response
* Include HAS_BED_PROBE in QUIET_PROBING
* Update gMax example file
* is_idle() is out of scope without the braces
* Convert FT-i3-2020 to Advance Pause names...
* Allow pause even if not printing

- Japanese and Chinese still need update

・Remove MSG_END_HOUR and MSG_END_MINUTE from all the language files
・Change from MSG_INFO_TOTAL_PRINTS to MSG_INFO_PRINT_COUNT in German
file

Make MAPPER_NON the fall back mapper - if no other is defined.
One list less to maintain.

・Remove abolished strings (MSG_NOZZLE1, MSG_NOZZLE2)
・Remove duplicated strings 
・Arrange the strings in unified order
・Adjust spacing
・Remove some comments in Japanese files(follow-up the PR #3560)

The most part of these changes were salvaged from closed my PR#3550.

New messages translated:
#define MSG_LEVEL_BED_HOMING "Homing XYZ"
#define MSG_LEVEL_BED_WAITING "Click to Begin"
#define MSG_LEVEL_BED_DONE "Leveling Done!"
#define MSG_LEVEL_BED_CANCEL "Cancel"
. . .
#define MSG_HOME_OFFSETS_APPLIED "Offsets applied"

ADD missing translation

In all these cases we want the axis to be homed. If we could have lost
some steps is secondary.

Reenables homing seperate axis with DISABLE_X / DISABLE_Y true.

Following up on #3231

documentation/LCDLanguageFont.md moved to http://www.marlinfirmware.org/ at commit 12d0983757,
but http://www.marlinfirmware.org/ isn't working.