[gnome-shell] gdm: clean up spacing

[Ray Strode <halfline src gnome org>]

commit d0edd970e12459addffc5c2bb75d31ebb09af68d
Author: Ray Strode <rstrode redhat com>
Date:   Tue Oct 11 13:34:04 2011 -0400

    gdm: clean up spacing
    
    There's a lot of dead vertical space right now from
    the session list, even if there are no sessions.
    
    This commit mops that up.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=661479

 data/theme/gdm.css    |    2 +-
 js/gdm/loginDialog.js |    7 +++++--
 2 files changed, 6 insertions(+), 3 deletions(-)
---
diff --git a/data/theme/gdm.css b/data/theme/gdm.css
index c77884b..83a09c1 100644
--- a/data/theme/gdm.css
+++ b/data/theme/gdm.css
@@ -99,7 +99,7 @@
 }
 
 .login-dialog-prompt-layout {
-    padding-bottom: 64px;
+    padding-bottom: 32px;
 }
 .login-dialog-prompt-label {
     color: white;
diff --git a/js/gdm/loginDialog.js b/js/gdm/loginDialog.js
index 3db76de..5420217 100644
--- a/js/gdm/loginDialog.js
+++ b/js/gdm/loginDialog.js
@@ -694,10 +694,13 @@ SessionList.prototype = {
         let ids = GdmGreeter.get_session_ids();
         ids.sort();
 
-        if (ids.length <= 1)
+        if (ids.length <= 1) {
             this._box.hide();
-        else
+            this._button.hide();
+        } else {
+            this._button.show();
             this._box.show();
+        }
 
         for (let i = 0; i < ids.length; i++) {
             let [sessionName, sessionDescription] = GdmGreeter.get_session_name_and_description(ids[i]);