correctly put eeprom EE_HANDS at addr 0x0a (decimal 10). default to rev2 project...

correctly put eeprom EE_HANDS at addr 0x0a (decimal 10). default to rev2 project. do not default EE_HANDS for the serial keymap

if you compare split_util.h with the original project by ahtn, the
address we look for isLeftHand config went from addr 7 to addr 10
(decimal). The EEP files were not updated.

EE_HANDS should not be enabled by default since it's more confusing for
most users