Manual bed leveling + mesh bed leveling

- `Conditionals.h` is included twice, setting LCD values the first time

Fix temperature min/max test

Latest upstream commits

- Base tests on all thermistors/thermocouples, not just heater 0

Fix for menus failing to scroll

- Prefetch values used more than once

- Use named axis indexes, `X_AXIS` etc.
- Replace `block.steps_A` with block.steps[A]`
- Replace `A_segment_time` with `segment_time[A]`
- Add `A_AXIS`, `B_AXIS` for `COREXY` axes
- Conditional compile based on `EXTRUDERS`
- Add BLOCK_MOD macro for planner block indexes
- Apply coding standards to `planner.h` and `planner.cpp`
- Small optimizations of planner code
- Update `stepper.cpp` for new `block` struct
- Replace `memcpy` with loops, let the compiler unroll them
- Make `movesplanned` into an inline function

by updating 'encoderPosition' in END_MENU() line 1.

Conflicts:
	Marlin/ultralcd_implementation_hitachi_HD44780.h

Cleaned!

Fix count_direction initializer

- Addressing #1625

Conflicts:
	Marlin/dogm_lcd_implementation.h
	Marlin/ultralcd_implementation_hitachi_HD44780.h

Fix merge conflicts 2

Get upstream commits

Conflicts:
	Marlin/dogm_lcd_implementation.h
	Marlin/ultralcd_implementation_hitachi_HD44780.h
Fixed conflicts 1

Fix hiliting of edit items in LCD menus

Latest upstream changes

PID debug

Beautivy statusscreen

codepos not used in gcode_M28()

- Not sure why these are showing as all new

- Add `Conditionals.h` with calculated configuration values
- Add `SanityCheck.h` with checks for configuration errors
- Remove equivalent code from all configurations
- Move error checks from some sources to `SanityCheck.h` also
- Fix initialization of count_direction in stepper.cpp

Conflicts:
	Marlin/temperature.cpp

Cleaned merge conflict.

Codeposition had changed.
Variable pid_input had vanished.

Signed-off-by: AnHardt <github@kitelab.de>

Conflicts:
	Marlin/dogm_lcd_implementation.h

solved merge conflict.

Reduce size of menu code

by shifting things some pixels around

In the new method we pass the character that should be used for
selected state, not the character to print always.

- Pass selected state directly to lcd_implementation_mark_as_selected
- Rename sel function parameter
- Include a minor fix for SdBaseFile.h

Get upstream changes

When one hit "Stop Print" option in LCD menu, the command buffer was not
cleared. The printer keep moving until the buffer has been emptied.
Actually I could not clear the command buffer as well.. I don't know
why, it doesnt work as expected.
I need to implement a routine inside Stepper ISR to handle such
situation.

in ultralcd_implementation_hitachi_HD44780.h lcd_print( about array index.

Conflicts:
	Marlin/dogm_lcd_implementation.h
	Marlin/fonts/make_fonts.bat

Claerd conflicts with my own #1621. (His was easy. :-) )

corrected typo in fonts/README.fonts

Applied changes to the new delta-configurations
 and deletet there some extra whitespace at the line-endings.

Saves one addition.
Needs one pointer on the stack.

Don't know if this is a go trade.

Remove 6x9 font