Change some string to get a better wording in german

@MarlinFirmware/language-team updated german languagefile to the latest english version

MSG_MOVE_E1 was missing
MSG_MOVE_E2 was missing
MSG_MOVE_E3 was missing
MSG_MOVE_E4 was missing

I assigned "0" to "MSG_MOVE_E1", "1" to "MSG_MOVE_E2" and so on, as this is what i assume to be the standard naming for the first (E0) and second (E1) extruder. This would have to be changed inthe other languages too :(

Added german translation for MSG_INFO_PRINT_LONGEST and  MSG_INFO_PRINT_FILAMENT.
MSG_HEATING_COMPLETE changed from "Aufgeheizt" to "Extr. aufgeheizt"
MSG_HEATING changed from "Aufheizen" to "Extr. aufheizen"

・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

@MarlinFirmware/language-team my changes for the German language. Feel free to improve :)

There is no way to translate "A-travel" to "A Rückzug". Thats simply
wrong.

We don't have to  avoid German "Umlaute" any more.

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.

Keep "astyled" reformatting

Apply `ENABLED` / `DISABLED` macros to language-related files.

and translate them to German.

language_de.h: updated translation and minor typos

* Added MSG_END_HOUR and MSG_END_MINUTE labels to all language files.
* Available translations:
  EN, FR, DE, ES, IT, PT, PT-BR.

Automatic selection was to unflexible.

Updated documentation

Updated language files to new logic and documentation.

Updated bdf2u8g.exe

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.