Bug 26406: Fix suggestions filter at the OPAC

Bug 26406: Fix suggestions filter at the OPAC

There is an input filter but it does nothing

Test plan:
You need 2 differents users, U1 and U2
Create several (at least one) suggestions for each of them
Test the following with and without OPACViewOthersSuggestions:
With U1 logged in, go to the suggestions tab and use the input to filter
the suggestions.
It should work correctly.
Also play with the "Suggested by" options

Signed-off-by: David Nind <david@davidnind.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>