Encourage standardized budget format

[Ainali]

Instead of the csv with seemingly arbitrary columns, I think we could encourage some standardized format so that it becomes easier to compare different organizations to each other. Unfortunately, I don't know which ones are good, but perhaps @mattiasaxell who presented work on municipal budgets yesterday have ideas.

[lapidus]

Yes, great idea @Ainali. I didn't spend enough time yet on the individual CSV templates and standards.
Happy for Pull Requests or links to existing standards.