nextAdvanceISR is set in the next if structure in every possible
situation, so it's useless to set it once more before.

In reference to #9633

* Move Creality Ender-2 configurations
* Add Creality Ender-4 configurations

Removal of obsolete (i) from port of LIN_ADVANCE from V1.1.x to V2..0.x.

From #7314 by @MrAmericanMike

Fix #9778

Fix #9208

Fix #8805

In response to https://github.com/MarlinFirmware/Marlin/issues/7076#issuecomment-367556982

Fix #9759

Fix #9732

From @rmoravcik at #9760

- This status screen uses the ST7920 character generator to greatly
  reduce SPI traffic and MCU load when updating the status screen.

- Has been tested with the RepRapDiscount Full Graphics Smart Controller
  but should work with any LCD that uses an ST7920 or fully compatible
  controller.

- This makes it look less like a dash (idea stolen from cjsoong).

- This will slightly reduce the SPI requirements for
  updating the progress bar.

- Also deleted old implementation files which had been renamed.