Mention Z_PROBE_ALLEN_KEY in probe sanity checks

Use code_value_long for potentially large values

Addressing #3711

Update Japanese translation, etc

・Arrange the strings in unified order
・Remove "#ifdef DELTA_CALIBRATION_MENU" directive
・Adjust spacing

・Add new translation
・Add translation for 16 width ASCII LCD
・Change translation
・Revert translation from Japanese to English
・Fix typo

Fixed Makefile to work with Melzi2 boards on arduino-1.6.x

Fallthru in thermal runaway test when TRState changes

Fix dipping on DELTA robots during G29

- Addressing #3689, et. al.

Enclose #error strings with apostrophes in quotes

Cleanup and consolidate probe conditionals for clarity

Fix compilation error in debugging  code

Fix compilation error in Thermal Runaway debugging code

Use AxisEnum with _lcd_babystep()

Localize babystepping in the Temperature class

So that `ultralcd.cpp` doesn’t need to worry about the details.

Follow-up the PR #3643(Temperature singleton)

Moved DELTA radius/rod default trimmer values to Conditionals.h

Follow-up the PR #3643(Temperature singleton)

・Change from fanSpeedSoftPwm[0] to thermalManager.fanSpeedSoftPwm[0] in planner.cpp
It fix compilation error when FAN_SOFT_PWM is enabled.

・Remove declaration of setExtruderAutoFanState() in temperature.h
Because that function was abolished.

・Change from babystepsTodo to thermalManager.babystepsTodo in ultralcd.cpp
It fix compilation errors when BABYSTEPPING is enabled.

Temperature singleton

Can't use the ENABLED macro as a boolean

Use directional buttons when defined

Ultimate followup to Stepper/Planner patch

- Search all symbols and apply prefixes where needed
- Encapsulate some private methods
- Inline some setters
- Make `microstep_mode` a public method

Additional follow-up the PR #3631(Encapsulate S...

Fix for PR #3526(Configuration.h LCD & SDCard s...

Fix for PR #3526(Configuration.h LCD & SDCard section rewrite)

It removes duplicated BQ_LCD_SMART_CONTROLLER.

Additional follow-up the PR #3631(Encapsulate Stepper, Planner, Endstops in singleton classes)

・Change from abort_on_endstop_hit to stepper.abort_on_endstop_hit in endstop.cpp, Marlin_main.cpp, and ultralcd.cpp
・Add include path to cardreader.h and temperature.h in endstop.cpp(for CardReader class and disable_all_heaters())
It fix compilation error when ABORT_ON_ENDSTOP_HIT_FEATURE_ENABLED and SDSUPPORT are enabled.

・Change from digipot_current() to stepper.digipot_current() in Marlin_main.cpp
・Change from digitalPotWrite() to stepper.digitalPotWrite() in Marlin_main.cpp
It fix compilation errors when HAS_DIGIPOTSS is enabled.

・Change from microstep_mode() to stepper.microstep_mode() in Marlin_main.cpp
・Change attribute of microstep_mode() from private to public in stepper.h
・Change from microstep_readings() to stepper.microstep_readings() in Marlin_main.cpp
・Change from microstep_ms() to stepper.microstep_ms() in Marlin_main.
It fix compilation errors when HAS_MICROSTEPS is enabled.

Fix BABYSTEPPING, add it to Travis test

Follow-up the PR #3631(Encapsulate Stepper, ...