Log Message:
Update to 2.18.0:

==============
Version 2.18.0 - "Original Face"
==============

 * Translations:
[skipped]

==============
Version 2.17.4 - "I Need"
==============

 * Look for gdm socket in two places.
 * Use off-the-shelf about box.
 * Only query GDM on display of menu.
 * Translations:
[skipped]

==============
Version 2.17.2 - "Stephen's Exhibition"
==============

 * Rewrote GDM communication core to be nonblocking. (Thomas)
 * Read GDM configuration from GDM, not from its configuration
 file. (Thomas)
 * Updated translations
[skipped]

==============
Version 2.17.1
==============

 * Moving through the user list with arrow keys goes in the
 correct direction. (#343907) (Thomas)
 * Refresh user list on creation of /etc/passwd as well as update.
 (#356368) (Thomas)
 * Updated translations:
[skipped]