extract channel mapping for Five adapter
extract channel mapping for ITV adapter
Add Schedule-based Equivalence tasks for BBC, ITV, C4, Five and Redux
Merge branch 'mbst-6785-multi-equiv-write' into stage

* mbst-6785-multi-equiv-write:
  Add Schedule-based Equivalence tasks for BBC, ITV, C4, Five and Redux
  extract channel mapping for ITV adapter
  extract channel mapping for Five adapter