Filter the funders list by `edit` permission for current user (bulk uploader)

[bickelj]

Even if the current user has view permission for the funders, that does not imply that the current user can do a bulk upload for that funder. So if the dropdown includes a funder that the user can view but not edit, it sets the user up for a failed bulk upload. PhilanthropyDataCommons/service#1976 will at least bring the list down to view permissions, but that is not quite enough, I think the bulk uploader will need to filter it further or change it to only those with edit permission (which may or may not overlap with view permission).

[bickelj]

Perhaps simply query /users for me and get the list of funders from that response body.