Add new 'callback' edit-menu types that call a function after the edit is done. Use this to display and edit Ki and Kd correctly (removing the scaling first and reapplying it after). Also use it to reset maximum stepwise acceleration rates, after updating mm/s^2 rates via menus. (Previously, changes did nothing to affect planner unless saved back to EEPROM, and the machine reset).

Add calls to updatePID() so that PID loop uses updated values whether set by gcode (it already did this), or by restoring defaults, or loading from EEPROM (it didn't do those last two). Similarly, update the maximum step/s^2 accel rates when the mm/s^2 values are changed - whether by menu edits, restore defaults, or EEPROM read.

Refactor the acceleration rate update logic, and the PID scaling logic, into new functions that can be called from wherever, including the callbacks.

Add menu items to allow the z jerk and e jerk to be viewed/edited in the Control->Motion menu, as per xy jerk.

Conflicts:
	Marlin/language.h

Seems that there was something wrong while merging

The LARGE_FLASH flag allows superfluous features to be excluded
on boards with less memory

This allows PID_FUNCTIONAL_RANGE to use a maximum duty cycle higher
than PID_MAX. This is useful for powerful heaters to heat quickly in
bang-bang mode, but use a lower duty cycle that is easier to stabilize
in PID mode.

Found some unwanted html at the bottom of the file which caused it to not be able to compile.
Also added rumba as machine.

This code selects between the routines for the GLCD or the char.
display.

A new variable was introduced to allow fan animation on the GLCD.
Add additional float to string conversion routine without sign
character. This is used for the coordinates visualisation on the GLCD.

This contains the menues, status screen etc...

1. Marlin welcome screen
2. Status screen symbols 3 Extruders, heated bed, animated fan logo 1
3. Status screen symbols 3 Extruders, heated bed, animated fan logo 2

Sorry for that. This does not lead to compile errors. I removed the
unwanted code to make it clean.

Fix step rate bug (especially for retraction)

These definition contain also the definition for the graphics LCD.

Definition for the graphic LCD are already in it, they will not harm the
configuration as they are only defined constants

Fix step rate bug (especially for retraction)

Generated with createTemperatureLookup.py. The old table crapped out at
270C, which was a problem for polycarbonate.

These definition contain also the definition for the graphics LCD.

Definition for the graphic LCD are already in it, they will not harm the
configuration as they are only defined constants

Update Polish language 	#define MSG_RESUMING "Wznawiam drukowanie"

Fix to a bug that I just introduced - sorry. Forgot about offset of string length.

Add SD-Card change and SD-Card init. for reprap electronics without
SD-Chard change detect pin.

Use all available characters in narrow LCDs < 20 characters.

Fix to a minor bug with hardcoded LCD_WIDTH that draws edited values outside of the 16 characters width LCDs.

The extruder offset can be specified in the configuration
file or adjusted on the fly using the "M218 T# X# Y#" command.
The EEPROM support is not yet merged in.
The "T#" command can take option "F#" that specifies the feedrate
at which the printing head should be re-positioned. If not
specified the re-positioning move is not preformed immediately,
but the coordinates are adjusted for the printer to properly
position the head when the next movement happens.