web: add back timing stats for the search results page

Apparently, the golang template library strips out the comments, so
the <!--samp> block where they were before doesn't preserve them.

Change-Id: I6696a612a4cca54572986be77c388bd9c1d61dc6

web/server.go

@@ -269,6 +269,10 @@ func (s *Server) serveSearchErr(w http.ResponseWriter, r *http.Request) error {
 		SearchOptions: sOpts.String(),
 		FileMatches:   fileMatches,
 	}
+	if res.Stats.Wait < res.Stats.Duration/10 {
+		// Suppress queueing stats if they are neglible.
+		res.Stats.Wait = 0
+	}
 
 	var buf bytes.Buffer
 	if err := s.result.Execute(&buf, &res); err != nil {

web/templates.go

@@ -228,13 +228,13 @@ var TemplateText = map[string]string{
     {{end}}
     <hr>
     <p class="text-right">
+      Took {{.Stats.Duration}}{{if .Stats.Wait}}(queued: {{.Stats.Wait}}){{end}} for
       {{HumanUnit .Stats.IndexBytesLoaded}}B index data,
       {{.Stats.NgramMatches}} ngram matches,
       {{.Stats.FilesConsidered}} docs considered,
       {{.Stats.FilesLoaded}} docs ({{HumanUnit .Stats.ContentBytesLoaded}}B) loaded,
       {{.Stats.FilesSkipped}} docs skipped
     </p>
-    <!--samp>{{.Query}} with options {{.SearchOptions}} in {{.Stats.Duration}} (queued: {{.Stats.Wait}})</samp-->
   </div>
   {{ template "jsdep"}}
 </body>