Return and Total Return information

[fungos]

I did a quick hack here to display returns on each investment, I think this can be very useful and even better if we can put some kind of alerting on ranges.

So, I'll let here a feature request for the returns on investment, here a screenshot with a sample testing:

To have this, you need the average buy unity value in the config.

[lukstei]

Sounds like a great idea - feel free to provide a PR for it