Show 'n results hidden by filters — Show anyway' badge when needed

[w84april]

What type of issue is this?

Minor Change

What needs to be shipped?

Not obvious that some search results might be hidden

[rossgalloway]

What I would like to see is:
Search is over the widest possible set of vaults. Then current filters are applied and only the union of the search and filters are shown. Then the message says "X search results hidden by filters" is shown with a button to show hidden results. That then unsets the filters and shows all search results.