toutf8 improved & add max git diff lines

templates/repo/diff.tmpl

@@ -105,7 +105,7 @@
                                 <span rel="L1">{{if .RightIdx}}{{.RightIdx}}{{end}}</span>
                             </td>
                             <td class="lines-code">
-                                <pre>{{.Content}}</pre>
+                                <pre>{{ToUtf8 .Content}}</pre>
                             </td>
                         </tr>
                         {{end}}