Add Numlock level for gaming
* remove windows key
* add tab for the pinky
* ESC above tab
Switch the two cursor blocks
* cursor blocks switched, because the right hand only uses the cursor
  keys because the were right on qwerty; it should be more efficient to
  not to have to move the hand from the mouse to the cursor keys
  (this will be validated empirical)
Add keypad in fn layer
* the keypad works with the homerow as the homerow for the
  keypad with the spacebar as zero; it is usable like a normal
  numpad
Right Alt is the LAlt
Should eliminate AltGr because it does not open menus.
AltGr can be simulated by pressing Alt+Ctrl, which is easily done with
either pinky.
Added a second tab button to Numlock level
Makes it easier to hit in stress situations