hector_pose_estimation_rtt: renamed package to rtt_hector_pose_estimation to follow typical rtt_ros_integration naming conventions
hector_localization: added .gitignore file
hector_localization: added package message_to_tf from hector_common
hector_localization: removed mainpage.dox files
world_magnetic_model: added .gitignore file
hector_pose_estimation: added euler angle publisher
hector_pose_estimation_core: added missing registration of parameter timeout in measurements
hector_pose_estimation_core: added deviation parameter for magnetic measurements and updated stddev semantics

If the magnetic measurement model does not have magnitude information (magnitude
parameter set to 0), the provided stddev should be refered to the unit sphere.
Until now, Magnetic::getCovariance() divided the model variance by the squared norm of the update vector.