MINIMUM_STEPPER_PULSE option

Fix Danish encoding and an error message

Marlin patches for homing, esp. Delta

Patch stepper.cpp to allow omitting steppers

Rc temperature isr comments

Debug logging of nozzle type and offsets

TWIBus patch for proper use of Wire.requestFrom

Danish update (18 Aug 2016)

Log whether homing with probe or endstop

Add note suggesting RAMBo users use the RAMBo board type or platformio environment

Cleanup of pins files, Conditionals

Add note that Viki 2.0 wiring diagram v1.2 has a mistake in it;

Suppress warnings

Repair MarlinSerial with TX-buffer

These '{' are important to avoid the redefinition of `unsigned char _sreg = SREG;`
at the same level.
Used in
```
#define CRITICAL_SECTION_START  unsigned char _sreg = SREG; cli();
```

Update french language

MIN_SEGMENTS_FOR_MOVE => MIN_STEPS_PER_SEGMENT

Follow-up to #4666

M211: Enable/Disable Software Endstops

PREVENT_DANGEROUS_EXTRUDE => PREVENT_COLD_EXTRUSION

Also improve the documentation of this and related options, and set
EXTRUDE_MINTEMP to 170 everywhere.

Clean up ultralcd code, dependencies on ULTIPANEL

dropsegments => MIN_SEGMENTS_FOR_MOVE