Move from SRAM to flash ;)
Centralize all display messages in config.h

That way we can translate them at will and also
have different messages (=different length) per display type.
16x2 display: More user friendly output

First  line:  speed AND motor power
Second line:  battery left AND total km
createChar(): Constification
16x2 display: Custom brake and battery symbol
Merge pull request #1 from jenkie/master

Update 16-Apr-2014