Feature Request: Allow multiple uses of the same importer in config

[lamronby]

Using beangulp, it's possible to configure the same importer to be used for multiple accounts, but Fava doesn't support this configuration. It fails with the error Duplicate importer name found.

[yagebu]

The name of an importer is supposed to be its unique id (https://github.com/beancount/beangulp/blob/1f315a62afc5160bb1d62759451f3610186e293f/beangulp/importer.py#L32) and Fava uses it that way. You can use the "same" importer twice in Fava as well by e.g. including the account name in the importer name.

[lamronby]

Thanks for the tip, this works!