Upcoming and available children not always on brand

In the case of generic episodes, childrefs may not be present on
a brand. Therefore they are now synthesized on output.
Merge pull request #413 from atlasapi/upcoming-available-childrefs

Upcoming and available children not always on brand
don't extract years from null descriptions
disable obsolete childref test
fix PA test now broadcasts are consistently ordered
Merge branch 'master' into stage

* master:
  fix PA test now broadcasts are consistently ordered
  disable obsolete childref test
  don't extract years from null descriptions
  Upcoming and available children not always on brand