test_result: sort test results by status

We want to have FAILED test results before PASSED, to easily see the
failed tests.
Apparently this was a local change on nexedi ERP5 for some time but the
change got lost in yesterday's update. Let's commit it to make this
permanent.

bt5/erp5_test_result/SkinTemplateItem/portal_skins/erp5_test_result/TestResult_view/listbox.xml

@@ -535,6 +535,10 @@
                     <key> <string>sort</string> </key>
                     <value>
                       <list>
+                        <tuple>
+                          <string>string_index</string>
+                          <string>ascending</string>
+                        </tuple>
                         <tuple>
                           <string>errors</string>
                           <string>descending</string>