add class Bottle and utils library

move a lot of stuff from sketch.ino to libraries
add servo calibration to class Bottle and cleanup

Each servo (i.e. position bottle down/up) can be configured separately.
Configuration moved to config.h. Also removed many things not needed
anymore (used for old strategy moving slowly down).
Makefile and serial connection board independent

tested with Duemilanove, should work with Leonardo too, other boards
unkown
add constructor Bottle() --> major cleanup