Fidelity cma csv importer

[kantskernel]

Changes here are:

• importer for Fidelity Cash Management account (CSV)
• an example
• minor change to csvreader

I didn't realize there was already an effort to get this working with OFX. I just saw this today:
#41

If we'd rather not support CSV since it seems that OFX is a better option, that is okay with me. I plan to try the OFX later. Just wanted to share what I've been working with.

A couple other comments:

• it looks like banking.py enforces both a payee and a narration so that is why I split up "Action" into payee and memo
• there is probably a nicer way to iterate through the Action rows (removing all of my if statements). I'm open to any feedback

[kantskernel]

I've been looking at ways to simplify prepare_raw_columns-- rdr.split() looks promising. Just trying to get the right regex. It would also be an option to create a payee column but leave it blank and then just use the "Action" column as narration/memo

[redstreet]

Nice, clean importer, with the test data---thanks! Happy to merge this in. A couple notes:

• I'll change the directory structure to match the new one-per-institution
• You're right, ofx files are far better than csvs in my experience, and I'd strongly recommend using ofx when available. Fidelity is particularly good because they still support direct downloads. However, the csv importer here comes in handy if you want to import data older than 90 days, which ofx might not support.

[redstreet]

Done in 98c967c. Thanks again!

[redstreet]

I like your rdr.capture() approach. Nice find! Just mentioned it here FYI.