Document Financial Permissions

[aydun]

Document Financial Permissions - see #241

More consistent formatting of permission names

[seancolsen]

Nice additions! And thanks for splitting up the commits like that 🙂

I made some edits that I'll admit are a bit nit-picky. Just trying to make the text faster to read. I'm going to mere this now, but I'm happy to discuss my edit more if there's anything you disagree with.

[aydun]

Thanks @seanmadsen - all good improvements. Personally I like examples early - I grasp the potential usefulness of "see events payments but not donations" more easily than "control access by financial type" (what was a 'financial type' anyway??). But then I skip to the bottom of man pages to read the examples before wading through the option details!