Profit Report phase 1

Incomplete and a bit buggy because it has been partially ripped apart to
make way for the campaign oversight that was on the original version.
Profit Report - pre-icing, almost done

Functional! Still could use some usability and QA. I have a wishlist,
too...
Profit Report

Added ability to upload csv of orders.
Merge pull request #133 from amanda-abg/master

Plugin: Profit Report