The search engine and the accents

Accents should be treated as no accented letters so the search engine works correctly.

I mean, searching for Bob should find Bób, Böb and BÓB.
The same way that searching for Bôb should find Bob.

Also special characters should be ignored **)(=",'**
So if someone is called **Foo Bob (Lol)** someone should find him by typing **foo bob lol**

No file or test is named. Start by locating the client's search implementation and its existing matching tests, then verify how names are normalized and how special characters are handled. Done means searches match accented and unaccented forms in both directions and ignore the listed punctuation, with tests covering the Bob and Foo Bob examples.

Written by the indexing model from the issue text.