Merge pull request #857 from vrabaud/master

bump opencv2_doc
update robot_model packages
add doc entries for robot_model
Merge pull request #858 from isucan/master

re-release robot_model
bump version for moveit_resources
Merge pull request #859 from isucan/master

bump version for moveit_resources
rereleasing perception_pcl
Merge pull request #860 from jkammerl/master

rereleasing perception_pcl
opencv2_doc 2.4.5-3