Correctly applies the 'none' class to prevent hiding/showing empty legends
herge branch 'develop' of github.com:CartoDB/cartodb into develop

* 'develop' of github.com:CartoDB/cartodb:
  loading assets manager
  CDB-190 #resolve ok button in assets manager
  Adds missing method to fix refresh bug
Merge branch 'develop' of github.com:CartoDB/cartodb into develop

* 'develop' of github.com:CartoDB/cartodb:
  CDB-200 #resolve narrower disclaimer in new table dialog
  [importer] Limit encoding detection to first 1000 characters
  [importer] DataImport clean up
  CDB-204 #resolve Support Google Maps conversion to KML on importer
  CDB-199 #fix duplicate asset upload
  Don't throw exception if anything fails when sending Ducksboard events
  Don't fail if there is no extension
  Fix merge conflict
CDB-193 #close Saves the state of the entered text on blur