add journal logo to Flow Manager columns

is there a better pattern here?

we're currently handling 2 cases: 

1. in /admin/journals/:id/roles/:id/flow_manager, `journal` objects are available
1. in /flow_manager, `user_flows` are available, which we've only added JournalName or JournalLogo to

we might just pass down the full journal with `user_flows` and handle the view in the same way, but that felt a bit heavy.