scan the download directory not only on startup

[Thibault D]

usb-creator scans the download directory on startup (from #441104), but it should also scan it after.

1) empty your download directory from any .iso
2) open usb-creator-gtk
3) copy your .iso from your last backup

usb-creator should show the *iso in the download list, but the list remains empty

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: usb-creator-gtk 0.2.28.3
ProcVersionSignature: Ubuntu 2.6.38-10.46-generic-pae 2.6.38.7
Uname: Linux 2.6.38-10-generic-pae i686
Architecture: i386
Date: Fri Jul 22 23:25:14 2011
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=fr_FR:en
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: usb-creator
UpgradeStatus: No upgrade log present (probably fresh install)

[Thibault D (thibdrev)]

Hi,
This one is still true on Oneiric 11.10.
And it might be marked as a "wishlist".