Re-enabling build of hokuyo driver and hokuyo tutorial
Updated hokuyo module to new location in rosjava_extras
project properties not used in the new adt.
bugfix the maven dependency name for the hokuyo jar.
Adapts to new package name for Hokuyo dependency - see https://github.com/ros-java/rosjava_extras/issues/2
rearranging and reenabling hokuyo tutorial.