added test.action
test action_server and action_client working
added separate header for action_server and created sensorPlacementAction
progress but cancel request needs to be fixed
cancelrequest working
improvements done, NEXT: check terminal status after successful completion of all actions
fixed action terminal status problem
made preemption response a lot faster
minor bug fixes and code clean up
Merge pull request #14 from ipa-mig-mc/feature/service_to_action_migration

Feature/service to action migration