bulk commit of tutorial focused changes

  - strategy plugins now cancel ovrlay on failures
  - iteration of tutorial part1
  - task descriptions can now be self-referential for expansion
  - document handling of password configs
  - ensure usage of contexts for sagapilot
  - ensure usage of username for file staging
  - fix a state check in  workload manager

A
remove stale files
auto-create tutorial tarball whenever documentation is build