・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.
Update and change Japanese translation
・Follow-up the PR #3411(Update Readme.fonts about Kana), Remove "who really..." strings. I had forgotten it.
・Add readable translated strings in comment
・Add Japanese translation.
MSG_LCD_ENDSTOPS "エンドストップ"
(utf8 version only. Because non-utf8 version ("エンドストップ") over 8 characters)
・Change translation.
MSG_ACC "カソクド mm/s2"
MSG_ACC "\xb6\xbf\xb8\xc4\xde mm/s2" ("カソクド mm/s2")
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.