Merge pull request #113 in SWDEV/franka_ros from multi_panda_beta to develop

* commit 'd7cd4473': (160 commits)
  removed default IP
  removed default IPs in dual example control launch
  removed robot ips from combined control yaml, ips mandatory in launch
  removed franka.de ending from ips in config
  remove const in header for pass by value params
  added robot ips in dual arm example control launch
  support robot ips as launch arg in combined control launch
  fixed typos, added copyright, fixed changelog
  fixed typo in doc string
  removed unused headers in control node
  added arm_id on error print when catchinh control exception
  use lock_guards for command and state acess
  removed saturateTorqueRate from combinable hw, set default cutoff freq to 1000
  removed unneccesary scripts
  added missing ip and fixed controllers arg
  more general combined launch file
  improved prints in resource_helpers
  fix for service lib in cmake
  removed unnecessary global statement in interactive marker
  franka 0.5 -> franka 0.7, fixed cmake for service lib
  ...