Merge pull request #4305 from jbrazio/feature/splash-improvement

Marlin/Conditionals.h

Marlin/Configuration.h

Marlin/Marlin.h

Marlin/Marlin_main.cpp

Marlin/dogm_custom_bitmaps.h

Marlin/dogm_lcd_implementation.h

Marlin/example_configurations/Cartesio/Configuration.h

Marlin/example_configurations/Cartesio/_Bootscreen.h

Marlin/example_configurations/Felix/Configuration.h

Marlin/example_configurations/Felix/DUAL/Configuration.h

Marlin/example_configurations/Hephestos/Configuration.h

Marlin/example_configurations/Hephestos_2/Configuration.h

Marlin/example_configurations/Hephestos_2/_Bootscreen.h

Marlin/example_configurations/K8200/Configuration.h

Marlin/example_configurations/K8400/Configuration.h

...in/example_configurations/K8400/Dual-head/Configuration.h

...le_configurations/RepRapWorld/Megatronics/Configuration.h

Marlin/example_configurations/RigidBot/Configuration.h

Marlin/example_configurations/SCARA/Configuration.h

Marlin/example_configurations/TAZ4/Configuration.h