This is updated on the backend when ngrams are updated.

Use thisModule everywhere.

This uses cached version first, then reloads after data is loaded.

Still in TODO: refresh graph properly, show that it is updating

listId, limit are required params for all charts.
(corpusId, listId) is the required pair for chart generation, see
#180 (comment 2466)

This paves the way to add endConfig as a variable.

See:
https://github.com/purescript-contrib/purescript-argonaut-codecs/blob/v5.1.2/src/Data/Argonaut/Decode/Combinators.purs#L97

This paves the way to add endConfig as a variable.