calvin_pick_n_place: pick works!
calvin_pick_n_place: clean up manifest.xml
calvin_pick_n_place: explicitly include all used msgs
added stored poses for gripper open and gripper closed
calvin_pick_n_place: spinner, synchronous moves, less sleeps

* Added an AsyncSpinner; this fixes the problem that pick() doesn't return.
* Changed asyncMove() to move() so we wait until the previous move is complete.
* Removed a lot of unneccessary sleeps.
calvin_pick_n_place: use moveit group to open gripper instead of action

There's nothing wrong with the previous solution, but using the MoveIt
group is easier.
calvin_pick_n_place: use detachObject()
calvin_pick_n_place: remove attempt to allow collisions with testobject

* This doesn't work; it just messes up the planning scene, leading to
  aborted plans because of collisions with the object when retreating.
* One should never construct a planning scene directly; instead, use the
  Planning Scene Monitor (see
  http://docs.ros.org/api/pr2_moveit_tutorials/html/planning/src/doc/planning_scene_tutorial.html#setup)
calvin_pick_n_place: place now works!
removed unused planning scene publisher. fixes compile error.
calvin_pick_n_place: remove obsolete code

* pick_n_place.cpp was just a messy copy of this one (definitely makes
  sense to look at this later):

    https://github.com/ros-planning/moveit_advanced/blob/hydro-devel/pr2_pick_place/src/pick_place_demo.cpp

* the rest also were outdated versions of either that or demo2
calvin_pick_n_place: renamed demo2
calvin_gazebo: add some dependencies
fixed joint_commanders parameter setup in calvin_gazebo_common
calvin_moveit_config: use chain instead of joints for arm group

The net effect of this change is that the katana_gripper_link + the
fixed katana_gripper_joint are also part of the arm group. Not sure
whether this solves our problems with colliding trajectories, but it
seems to make more sense.
calvin_gazebo: add launch file for launching calvin_world with calvin
calvin_description: replaced buggy camera_plugin for vgacam with the one for kinect/xtion

messy fix with several unnecessary topics, but does the trick for now.
imu urdf position adjusted to real position
calvin_description: calibrated the small laser scanner

Changed pitch and the position on the z-axis.
calvin_description: calibrated the big laser scanner

Changed the pitch and the position on the z-axis.