Update Configuration.h to MendelMax 2.0 defaults

Detailed changes are the following:
Motherboard                   301
Hotend Thermistor             1 
Bed Thermistor                60
TEMP_RESIDENCY_TIME           5
#define HEATER_0_MAXTEMP      245
BANG_MAX/PID_MAX              128
PID_FUNCTIONAL_RANGE          25
XYZ_MIN_ENDSTOP_INVERTING     false
#define DISABLE_MAX_ENDSTOPS
#define X_MAX_POS 230
#define Y_MAX_POS 310
#define Z_MAX_POS 225
#define DEFAULT_AXIS_STEPS_PER_UNIT   {80,80,1600,460}
#define DEFAULT_MAX_ACCELERATION      {3000,3000,100,10000}