Replaced calculation to centre bitmap with fixed values.
Saved 20 bytes.

and win another 1694 bytes.

No visible impact.

Fix HD44780 misspelled as HD44870

M200 cleanup, normalization of EXTRUDER loops

Normalized section headers, added some headers, added help URLs for newb...

Solid improvements. Merging.

Select DOGM-displays automaticly.
Give hint where to find charsets.
Add '²' and '³' characters.

Add support for BQ Prusa i3 "Hephestos"

Avoid compiling error

Only a missing ","... now it will compile again

Add FAN1_PIN and SERVO0_PIN

Fix nozzle in temperature menu

Introduction of a system to feed displays with the correct charsets. Example in language_de.h

This reverts commit 4d5b0e2037.

Fix number of nozzle displayed in temperature menu.

Defined the charsets plus a default.

Clean up some formatting

- Also partial cleanup of Marlin_main.cpp with a smidgen of Doxygen.

MSG_NO_MOVE = 'Kein Zug.' > 'Motoren Eingesch.' hat mich grau Haare gekostet.
Die englisch Meldung will sagen - Du kannst jetz am Extruder arbeiten, die
Achsen sind bockiert, die Motoren sperren die Achsen weil sie unter Strom
stehen, weil sie eingeschaltet sind.

to work out that this can't be resumed.