Merge branch 'release/3.1.02' into develop

* release/3.1.02:
  dist files for 3.1.02
  bump version to 3.1.02
Correctly applies the 'none' class to prevent hiding/showing empty legends
bump version to 3.1.03
Update NEWS
Fixes spec
dist files for 3.1.03
Merge branch 'release/3.1.03'

* release/3.1.03:
  dist files for 3.1.03
  Fixes spec
  Update NEWS
  bump version to 3.1.03
  Correctly applies the 'none' class to prevent hiding/showing empty legends