.) Use already existing inverse_millimeters instead of /
block->millimeters.
.) Prevent overflow during acceleration calculation by checking if float
is necessary. Idea modified from Sailfish.
.) Save two uint32_t or even float multiplications by checking if
step[AXIS] has steps and if max acceleration is lower than accel. If
not, there is no need to check this axis.

Fix for the PR #5066 (Updated french translation)

MSG_INFO_PRINT_TIME is still being used

Fix for the PR #4553 (Save bytes for custom chars (Hitachi LCD))

Apply encoder reverse options to keypad arrows

[LANGUAGE] Update Czech (BLTOUCH and DAC strings)

Updated french translation

Warnings fixed redux

Reduce, clean up MINTEMP / MAXTEMP test code

Set defer delay back to false when exiting babystepping.

LIN_ADVANCE optimizations

Fix manual leveling coordinates

As pointed out by #5044

Correct grammar and translation in language_de.h

As requested in #5031

We don't want to have retract/prime movements done with LIN_ADVANCE, that's also true with simultaneously executed Z-hops.

With this formula, a start value for K for further fine-calibration can be calculated.

Save some PROGMEM in MBL G28

Patch BAUDRATE line in configs

As noted by https://github.com/MarlinFirmware/Marlin/pull/4971#issuecomment-252503295

Made Filament change Text sound like correct german.

Fix for the commit dc2cb84 (Revert acceleration limiting to avoid overflow)

・Add forgotten '\'

Fix freezing and MINTEMP Error with MAX31855 thermocouple

Fix DAC current code

Adapt Jerk / Speed code from Prusa MK2

Move platformio directories out of source tree