removed non-existent moveit KDL libraries from ur_kinematics includes

* Add RobotModeDataMsg

* msg: clarify that not all fields from RobotMode are published

Updated xacro namespace.

Updated mesh ambience so the model isn't so dark in gazebo

all: update maintainer and author information.

Squashed commits:

* add roslaunch tests
* add missed dependencies
* Do not install roslaunch tests.

Squashed commits:

* Fix overlapping properties between robot definitions

   Uploading a different UR definition used to break the previous definition files by overwriting their link lengths. This commit makes the property names for each robot unique so they are independent of the other robot models.

* Move robot-specific parameters inside macro

   This is the cleaner solution for what the previous commit was meant to solve

Merged commits:

* missed python module definition and setup.py script
* clean the __init__ file

Using the 'doc' attribute on 'arg' elements.

readme: add badge and dev job link.

Fix meshes

Gazebo tag self collide

ur_moveit_plugin: fix compile error with GCC6

related to issue 'Improve meshes shading #233'. Visual meshes smoothed with 'split edge' function in blender.

Added run_depend for xacro

add doc strings to all launch file args.

driver: don't use deprecated robot_state binary.

Homogenize xacro macro arguments.

Remove UR3 ROS Control Hardware Interface warning