Have the configurator read from MarlinFirmware repo

Splash screen was shown with every display init.
That means every time the menus where entered.

Note the 2 in the initialisation.
The buffer is already written in two steps a 512 byte.
Without the 2 only the upper half is shown.

Example for splash screen.

This commit checks whether or not HEATER_0 is in use, and if not, skips
the MIN / MAX temperature checks.

This reverts commit bf04a92.

Just and only display splashscreen only once.

Fix compile error with Z_DUAL_ENDSTOPS

Should be `retracting` and not `retract`

Because we now can use utf8 with up to 3 bytes per symbol,
lcd_status_message[] must be 3*LCD_WIDTH wide.
Filling up the message, or cutting to length, are fixed to.

Fix for #1832 about at the end.

Update Configurator Files

Azteeg X3 Pro Pin fix ups

Disable splash-screen when done once

Fix lcd_status_message

- Address Issue #1682 at hash #issuecomment-89756858

Bugfix: Temperature checks when no heaters in use

- Sections in all `Configuration_adv.h`
- Recognize JAPANESE/WESTERN/CYRILLIC options
- Better capturing of comments for tooltips

Configurator updates

Fix G29 not deploying probe in some instances

Mesh bed leveling: Added G29 S3 + finer display steps during manual input + bug fix

- Set `de` to 0 when `position[E] = target[E]`
- Address regression mention in #1846

Squished #1849

Fix typo in readme

Latest upstream commits

Update language_ru.h

IsStopped / IsRunning inline

Set version to "1.0.3 dev"

Thermistor values for configurator

The other two devices we use in u8glib have more than only dummy code.
Checked this in the library code.

and cleaned typo.

to avoid errors in Marlin_main.cpp. #1860

In the include tree of Marlin_main.cpp the decision between the display types is not made.
To include the right LCD_STR_* ether 'dogm_lcd_implementation.h' or 'ultralcd_implementation_hitachi_HD44780.h' with all their code.
A 'dogm_lcd_implementation.h.h' would be a curiosity.
So i moved both of the definition blocks to conditionals.h

On the long term it could make sense to use the same numbering for the u8glib and the hitachi symbols.

Resolved some warnings in Marlin_main.cpp regarding compares of signed and unsigned integers by replacing 'int' or 'uint16_t' with 'uint8_t'.

The line const bool Z_PROBE_ENDSTOP_INVERTING = false; // set to true to
invert the logic of the endstop is in the main configuration.h but
wasn't present in the example configuration.h's. Causes a compiling
error with Z Probe enabled. Just added it to all the configs. :)

Remove Contrast Menu for device U8GLIB_ST7920

Latest upstream commits

Moved the definitions of the LCD_STR_* to Conditionals.h

Added sanity check for MESH_NUM_X_POINTS and MESH_NUM_Y_POINTS

Catch dangerous extrude before trying several

Latest upstream commits

where the hardware is available.
Fix for #1873

Z Probe inverting not present in example configs, causes error

Cold extrude

Made encoderPosition and quick_feedback dependant on NEWPANEL

- Use `line_to_current` in place of `plan_buffer_line`

Latest upstream commits

Fix moves for DELTA for MANUAL_BED_LEVELING

- It’s inline here, but could be a macro and duplicated for
`planner.cpp`

- In GCodes.md

Break out prevent_dangerous_extrude feature

Latest upstream commits

- Replace “Mendel” with “RepRap”

Apply CUSTOM_MACHINE_NAME to configs

machine name for hephestos too

- MENU_ITEM causes lcd_quick_feedback to be called, so only those calls
to `lcd_goto_menu` outside of the `MENU_ITEM` macro need to set the
`feedback` flag when calling `lcd_goto_menu`.

Fix doubled lcd_quick_feedback

- Prevent `Z_SAFE_HOMING` from homing Z twice in some cases
- Allow `G28` with XYZ values of 0 to explicitly set the position
- Don’t add `home_offset` when setting XYZ explicitly in `G28`
- Add `code_has_value` function to check for the presence of a numeric
value (could just test for space or nul to allow other types of values)

lcdDrawUpdate = 2 helped a lot!