Some clean-up for example configuration files
Follow-up and fix the PR #3253(Make the Autotune item(s) in the LCD menu optional):
・Update forgotten file(Felix/Configuration_DUAL.h)
Follow-up the PR #3526(Configuration.h LCD & SDCard section rewrite):
・Add section of RigidBot Panel to RepRapWorld/Megatronics/Configuration.h
Follow-up the PR #3576(Z Safe Homing for all):
・Adjust spacing
Follow-up and fix the PR #3625(Print job statistics):
・Update forgotten file(Felix/Configuration_DUAL.h)
・Remove ambiguous character "f" in top of RigidBot/Configuration.h
2fa4bc344c