hector_sensors_description: updated plugin code to use new sdf format
[hector_sensor_description]
-calibrate camera sensor head x-coordinate
added dependencies to xacro to package.xml
bumped version to 0.2.2 for groovy release
added xacro dependency to stack.xml
cleaned up urdf descriptions and fixed horizontal_fov tag in generic_camera.urdf.xacro
Merge branch 'groovy-devel' into fuerte-devel
hector_sensors_description: use gazebo_ros_camera plugin instead of gazebo_ros_depth_camera for the generic camera

* This was a relict from gazebo for fuerte.
Merge branch 'groovy-devel' into fuerte-devel
hector_sensors_description: added some more missing xacro namespace prefixes
Merge branch 'groovy-devel' into fuerte-devel
bumped version to 0.2.3
bumped version to 0.1.3
hector_sensors_description: fixed scale of asus_camera and kinect_camera meshes
Merge branch 'groovy-devel' into fuerte-devel

Conflicts:
	CMakeLists.txt