Type 4 profile no longer graphed for improved overall clarity

- A type 4 profile sets power Output(%) for a specified period. If mixed with
  setpoint type profiles, a Type 4 profile element can appear confusing.

  As such, a Type 4 profile is now purely textual.

  May consider adding a 'Power Output' overlay graph in a different colour,
  for Type 4 and Type 5 profile elements.