Note that the `budget` parameter was added to the `delete_path` method
so it works in the tests; on production, it worked because this
component is only rendered on pages which already have the `budget`
parameter.
Co-authored-by: Javi Martín <javim@elretirao.net>
There's no real point in linking to a page offering users to choose a
heading when there's only one heading to choose.
So we're linking to the investments index instead.
