adding monitored nav launch to targets
Merge branch 'hydro-devel' of https://github.com/strands-project/strands_navigation into hydro-devel
Merge branch 'target' into hydro-devel

Conflicts:
	monitored_navigation/CMakeLists.txt
monitor and recovery states are now defined via a config yaml file.
added strands specific config yaml
Merge branch 'hydro-devel' of https://github.com/strands-project/strands_navigation into hydro-devel
added service definitions for adding and removing monitor and help states to the overall monitored nav state machine
edit readme (to be extended later)
Merge pull request #98 from BFALacerda/hydro-devel

configuration of monitor and recovery states at startup and at runtime