www: style channelinfo hosts table rows

Use the rowToggle helper to style the rows with alternating colors. This
makes this table easier to read.

www/kojiweb/channelinfo.chtml

@@ -38,7 +38,7 @@
           <th>Ready</th>
         </tr>
       #for $host in $hosts
-        <tr>
+        <tr class="$util.rowToggle($self)">
           <td><a href="hostinfo?hostID=$host.id">$host.name</a></td>
           <td class="$str($bool($host.enabled)).lower()">#if $host.enabled then $util.imageTag('yes') else $util.imageTag('no')#</td>
           <td class="$str($bool($host.ready)).lower()">#if $host.ready then $util.imageTag('yes') else $util.imageTag('no')#</td>