Catkinized stack hector_quadrotor and integrated hector_quadrotor_demo package from former hector_quadrotor_apps stack
added changelogs
hector_quadrotor_gazebo: added some command input ports to
quadrotor_controller.gazebo.xacro
hector_quadrotor_gazebo: increased drift for the barometric pressure
sensor
hector_quadrotor_teleop: decreased z_velocity_max to 2.0 m/s in
logitech_gamepad.launch
hector_quadrotor: updated rosinstall file to point to the catkin branch
hector_quadrotor_gazebo: added dependency to package robot_state_publisher
hector_quadrotor_gazebo: added dependency to package robot_state_publisher
Merge branch 'groovy-devel' into hydro-devel
hector_quadrotor_controller: started to implement quadrotor controller using ros_control
hector_quadrotor_controller/hector_quadrotor_controller_gazebo: implemented pose controller, added package hector_quadrotor_controller_gazebo
hector_quadrotor: added package hector_quadrotor_pose_estimation
Merge branch 'catkin' into ros_control
hector_quadrotor_controller: use PoseStamped as command input for the pose controller, fixed parameter names in pose_controller.yaml
hector_quadrotor_controller: restructured QuadrotorInterface
hector_quadrotor_controller: updated QuadrotorInterface API to improve support for cascaded controllers, added twist input to the pose controller
hector_quadrotor_controller/hector_quadrotor_controller_gazebo:

 * using ROS parameters to configure state topics
 * use controller_manager in gazebo_ros_control instead of running standalone pose_controller
 * keep track of which controller is enabled() in QuadrotorInterface class
 * ...
hector_quadrotor_model: fixed header installation
Merge branch 'hydro-devel' into catkin

Conflicts:
	hector_quadrotor_gazebo/manifest.xml
hector_quadrotor_pose_estimation: added cmake target dependency on hector_uav_msgs_generate_messages_cpp