fixed diaspora logo asset on landing page

app/views/layouts/_header.html.haml

@@ -3,7 +3,11 @@
 -#   the COPYRIGHT file.
 
 .container{:style => "position:relative;"}
+
+  - if current_user
     = link_to image_tag('diaspora_logo_small.png', :height => "16px", :width => "161px", :class => "diaspora_header_logo"), root_path
+  - else
+    = link_to image_tag('diaspora_logo_large.png', :height => "32px", :width => "321px", :class => "diaspora_header_logo"), root_path
 
   - unless current_user
     .right

public/stylesheets/sass/application.sass

@@ -133,12 +133,9 @@ header
       :color #eee
 
   &.landing
-    #diaspora_text
-      :font
-        :size 30px
-      :text-shadow 0 2px 3px #000
     .right
       :top 10px
+    :height 45px
 
   ul#user_menu
     :overflow hidden
@@ -1733,8 +1730,6 @@ ul#landing_nav
   :margin 0
   :padding 0
 
-  :top 30px
-
   :font
     :size 14px