Added Simple Menu Mode for Da Vinci

- Adds a maintenance menu w/ Clean Nozzle, Clean Dripbox, Load Filament,
Unload Filament.
- Corrected settings for Auto Leveling and Probing.

Pros:
- Makes it easier to work with the Da Vinci 1.0.
- Simpler Menu Options.
- Auto Leveling Works Out of Box.

Cons:
- Only in English (Anybody want to translate?)
- Only tested with the Da Vinci 1.0.
Fixed M401/M402 memory position bug
Minor

Increased ENDSTOP_Z_BACK_MOVE to 5 for no real reason, it just seems to
make more sense??
Revert "Minor"

This reverts commit b5e6494b9f7732ee5a37b9b8b4f156ae94ca5cf5.
Update Interrupt

Untested.
Fixed Blank LCD / LCD Corruption Issue (Untested)
Correct Fix for LCD issues

Corrected the last commit.
Fix increment way in key pad

Increment is upside down key down increment, and key up decrement,
because key down is also used for next menu and key up for previous menu
from up to down.
Do not hide home commands after usage

Home command are hidden after usage so if launch X home, Y home is
hidden, also seem available even hidden as can be launched if nothing
looks selected - this is confusing and not convenient - remove hidden
filter to always show commands.
Add Power Saving function

In Quick Setting menu have a new setting for power saving
(off/1min/5min/15min/30min) this will set power off LCD back light and
light after defined time (default is 30 min), light will be back if
keypad is pressed - it also follow light on/off setting.
Typo errors found by Aaryn
Change Z travel acceleration to decrease noise

change Z travel acceleration from 100 to 150 in eeprom and repetier make
Z movement less noisy.
Avoid nozzle to hit metal plate when homing

Move Y in 7 to avoid nozzle hit metal plate after homing - Thanks Aaryn
Merge pull request #2 from drbogger/luc

Added Power Save Feature, and other bug fixes.