Fix Uninstall string shortcut

After you click "U&ninstall" or do alt+n, the Uninstall button gets
grayed out in the next page using a wrong key.

This also fixes the translations files.

Change-Id: I5704b1efdae9869ca22a2844af43e3142676bba1
Reviewed-by: Karsten Heimrich <karsten.heimrich@digia.com>
Reviewed-by: Tim Jenssen <tim.jenssen@digia.com>