Normalize utf8 strings in contact search

[ksamuel]

When I search for "élodie" in my contacts to write an SMS, "elodie" doesn't show up. If I type "maia", "maia" doesn't show up. I have to get the exact letters right, which is impossible to remember for all my contacts. It is possible to normalize to ASCII most of the latin based charater sets using NFKD (https://fr.wikipedia.org/wiki/Normalisation_Unicode), which would make the search must better. Fuzzy search for a few matches after the exact ones would hurt as well, but maybe I need another ticket for that.

Thanks for the app, I paid for it years ago and it's awesome.