MVP01 A user can manage their path to react from their profile page

[victorkane]

• The Matrix, with current path highlighted, showing status on each point (new, todo, doing, testing, done).
  • path (our name for course) is composed of steps (our name for lessons)
• Edit path (you cannot delete steps along your path once they have reached doing, or if they cut the path; the path has to be a single connected line (practical?))
• Click on a step to go to point dashboard (a doc for now)