Some probes don't work near the edges of the bed. This change promotes MIN_PROBE_EDGE to a general setting that applies to all probing functions.

Some "fix-mounted" probes need manual stowing. And after probing some may prefer to raise or lower the nozzle. This restores an old option but tailors it to allow raise or lower as preferred.

With this option enabled, Z won't ever be raised until after `G28` has been completed, and it won't raise if Z becomes unknown. This is good for machines whose beds fall when Z is powered off.

From #7314 by @MrAmericanMike

- Also deleted old implementation files which had been renamed.

Implemented for LPC1768.

- The 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.

- The 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.

Add compatibility with the original screen bord from Ultimaker 2 printer (UltiController v2.1 with the PG-2864ALBP I2C display)

Table is very very similar to old 104-GT2 so I added only the name and recycled old ID

* Use NOZZLE_PARK_FEATURE for ADVANCED_PAUSE_FEATURE

adds setup for the original Radds Display+Controller+SD Card Reader PCB
http://doku.radds.org/dokumentation/lcd-display/

* Adding support for using the MKS_12864OLED with the SSD1306 controller

* Update comment for correct controller type

- Fix G26 Circle Drawing.
- Add default extrusion settings so machine can print lines on print bed
- Yet to be done: Get LCD Menu's to use these settings.