The find function does not correctly handle special characters

1. Tag a photo with "été"
2. Edit > Find (Ctrl+F) and type "eté" (no accent on the first "e")

What should happen : Shotwell finds your photo.
What happens : Shotwell does not find your photo ("No photos/videos found")

However, if you type EXACTLY "été", it does find it.

This issue is also true with other french characters such as "À/à/A/à", "É/é/È/è", "U/u/Ù/ù" etc.

This issue is often annoying with capital letters as we do not often put the accent on it.
For example one saves the tag "Emile" (a french surname) but will often search faster for "émile".

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: shotwell 0.14.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.8.0-14.24-generic 3.8.4
Uname: Linux 3.8.0-14-generic i686
ApportVersion: 2.9.2-0ubuntu2
Architecture: i386
CasperVersion: 1.330
Date: Mon Mar 25 15:43:44 2013
LiveMediaBuild: Ubuntu 13.04 "Raring Ringtail" - Alpha i386 (20130325)
MarkForUpload: True
ProcEnviron:
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: shotwell
UpgradeStatus: No upgrade log present (probably fresh install)