Merge remote-tracking branch 'git-eoc/Marlin_v1_Kikai_T125' into lcd

Conflicts:
	Marlin/Configuration.h
Enabled EEPROM_SETTINGS. Added code to store our custom configuration entries. Added a menu screen to show the printer information (about). To do this, I added a new MENU_ITEM type (msg). Now the printer knows it's serial number, which can be set using M550.
Merge remote-tracking branch 'git-eoc/lcd' into lcd

Conflicts:
	Marlin/Configuration.h
Now the LCD display shows some temporary messages for a few seconds only and then it returns to a global status message. Added an option to set Z0 (G92 Z0) using the LCD display.
Changed a text in language.h.
Renamed the extrude menu to extrude/retract. Added a message when the extruder is too cold to extrude in the extrude/retract screen.
Updated thermistortable values to the ones we measured using a thermocouple.
Merge remote-tracking branch 'git-eoc/lcd' into Marlin_v1_Kikai_T140

Conflicts:
	Marlin/Configuration.h
Disabled set z0 in Configuration.h.