[gitg] Make the diff look a bit more like in github

[Ignacio Casal Quinteiro <icq src gnome org>]

commit dae47934b24e24d85c1cd9d326299199844324a9
Author: Ignacio Casal Quinteiro <icq gnome org>
Date:   Mon Mar 11 11:28:11 2013 +0100

    Make the diff look a bit more like in github

 libgitg-gtk/resources/diff-view.css |    8 +++-----
 1 files changed, 3 insertions(+), 5 deletions(-)
---
diff --git a/libgitg-gtk/resources/diff-view.css b/libgitg-gtk/resources/diff-view.css
index c15b2c3..be32a25 100644
--- a/libgitg-gtk/resources/diff-view.css
+++ b/libgitg-gtk/resources/diff-view.css
@@ -29,7 +29,7 @@ img.avatar {
 div.commit {
   padding: 10px;
   font-family: sans-serif;
-  background: -webkit-gradient(linear, left top, left bottom, from(#eeeeec), to(#d3d7cf));
+  background: #e6f1f6;
 }
 
 div.commit table {
@@ -94,12 +94,10 @@ div#diff div.file table tr.hunk_header td {
 }
 
 div.file tr.file_header td {
+  border-top: 1px solid #ccc;
   border-bottom: 1px solid #ccc;
   text-shadow: 1px 1px #fff;
-}
-
-div.file:first-child table.contents tr.file_header td {
-  background: -webkit-gradient(linear, left top, left bottom, from(#d3d7cf), to(#eeeeec));
+  background: -webkit-gradient(linear, left top, left bottom, from(#eeeeec), to(#d3d7cf));
 }
 
 div.stats {