Add Preheat Bed for slow response time sensor

Add Preheat Bed for slow response time sensor, check if sensor is
failing at start, if yes then preheat during maximum 10 seconds, if
sensor is still failing after preheat - then generate a sensor error
Change extruders default values steps from 96 to 99

Change extruders default values steps from 96 to 99, but still need
individual calibration for more accurate values, Thanks Oscahie and
Aaryn
Change Print area coordinates for 1.0 / update 2.0

Change Print area coordinates for 1.0 to not use 0,0 for home position
but negatives positions unlike 2.0
Update Autolevel, Manual Level position for 1.0 and 2.0 by setting hard
code coordinates and not calculed ones for better results