katana_arm_gazebo: port launch file to hydro
katana_moveit_ikfast_plugin: update meta info
fix encoding string in package.xml

This completely nuked rospack (and thereby roslaunch, ...) before.
Merge pull request #4 from apot/gripper_command

katana: katana now provides GripperCommandAction
katana: remove gripper_object_presence_threshold_

was made obsolete in c39307c923
katana: remove acceleration discontinuity warning

The trajectories generated by arm_navigation and MoveIt have
acceleration discontinuities, and that's fine, so this warning has to be
removed. As far as I can tell, the constraints are:

* positions have to be continuous and differentiable
* velocities have to be continuous
* accelerations don't have to be either
remove "Trajectory started to late" warning if start_time == 0

Moveit usually doesn't set the start time.
katana_description: remove deprecated `xmlns:*`

The only real change is removing gazebo_ros_controller_manager_dummy_iface,
and gazebo_ros_controller_manager isn't working in hydro any more
anyway.

Closes #5.
katana_gazebo_plugins: updated action interface of katana_gripper_grasp_controller to control_msgs/GripperAction
katana_arm_gazebo: replaced gazebo_ros_controller_manager with ros_control

katana_description: made necessary adjustments in order for ros_control to run properly

Requires further adjustments
removed package katana_trajectory_filter

outdated in groovy/hydro, since it was arm_navigation specific
katana_tutorials: removed trajectory filtering

Trajectory filtering removed, since it's not available on Hydro any
more. Unfortunately the trajectory is now unfiltered, so there's no
guarantee this will work on the real arm (only tested in Gazebo).
removed package katana_joint_movement_adapter

Doesn't compile on hydro because of trajectory_generation dependency