Update Configuration.h

Correction Z "AXIS STEPS PER MM" 
Changing preset temperature
Update Extruder.cpp

Fixed PID auto tune bug
Update Configuration.h

Adding protection if overheated probe HS
Merge pull request #1 from Doudou14/patch-1

Update Configuration.h
Merge pull request #5 from Doudou14/patch-7

Update Extruder.cpp
Merge pull request #1 from bgm370/davinci

Davinci