Navigator: make state names generic so that they can be used by the FSM visualisation tool later
Added FSM visualisation script
Navigator: FSM bugfix and missing break
FSM visualisation script: use argparse instead of optionparse and some minor cleanup
FSM visualisation script: renamed the file
Revert "Navigator: make state names generic so that they can be used by the FSM visualisation tool later"

This reverts commit 984a815b94709916174f6a0beeb8ae8217a9aed1.
FSM visualisation script: cope with prefixed state names
Merge pull request #618 from PX4/fsm_visualisation

FSM visualisation script