Alert -- Barchart JSON files now require an API key

Barchart has changed things so that any JSON requests require an API key. That means any add-in function that uses their JSON files will no longer work. A quick list of functions would be:

• smfGetBarchartPortfolioView()
• smfGetOptionQuotes(), when using Barchart as the data source.
• smfGetBarchartOptionQuote()

I'll be looking into this, but I'm not optimistic.