[FR] Add ISM data series

[mfuentesbo]

Could you please add the ISM data series from Nasdaq Data Link (formerly quandl) to the economy section of the terminal? https://data.nasdaq.com/data/ISM/MAN_PMI-pmi-composite-index

I believe it's an important economic series to analyze the economic cycle.

[jmaslek]

Happy to have someone look into this, but it looks like this source has stopped updating? Monthly updates, last one in april.