center-align looks better for the config matrix.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@3551 71c3de6d-444a-0410-be80-ed276b4c234a

core/src/main/resources/lib/hudson/project/matrix.jelly

@@ -17,7 +17,7 @@
     </j:when>
     <j:otherwise>
       <h2>Configuration Matrix</h2>
-      <table border="1" class="middle-align">
+      <table border="1" class="middle-align center-align">
         <!-- X-axis -->
         <j:forEach var="x" items="${o.x}">
           <tr>

war/resources/css/style.css

@@ -18,6 +18,10 @@ table.middle-align td {
   vertical-align: middle;
 }
 
+table.center-align td {
+  text-align: center;
+}
+
 #main-table {
   padding: 0;
   border-collapse: collapse;