Bad .desktop file

Binary package hint: app-install-data

/usr/share/app-install/desktop/mail-notification.desktop has an invalid desktop entry: [Desktop entry] instead of [Desktop Entry] and it results into a missing header to the package manager.

Moreover the icons' path is not set correclty.

Steps to reproduce:
1. Install app-install-data package

Output from synaptic console (Italian locale):

Configuro gnome-app-install (0.2.12) ...
Caching application data...
Got non-package menu entry kiso.desktop
Got non-package menu entry denemo.desktop
Got non-package menu entry xchm.desktop
Got non-package menu entry tsclient.desktop
Got non-package menu entry grdesktop.desktop
Got non-package menu entry k3dsurf.desktop
Got non-package menu entry kmyfirewall.desktop
Generating mime map...
bad .desktop file: /usr/share/app-install/desktop/mail-notification.desktop: ParsingError in file '/usr/share/app-install/desktop/mail-notification.desktop', [Desktop Entry]-Header missing