[Findit] Bailing out if build data is too old and moving relevant settings to config

appengine/findit/templates/config.html

Index: appengine/findit/templates/config.html
diff --git a/appengine/findit/templates/config.html b/appengine/findit/templates/config.html
index 2e2cee44ea667f1bcc649ff80ddeea6d15c03585..e8b61057563d6cc1e91fe736a655924fffbe17e8 100644
--- a/appengine/findit/templates/config.html
+++ b/appengine/findit/templates/config.html
@@ -30,6 +30,7 @@
     findit.builders = {{ builders | tojson | safe }};
     findit.tryJobSettings = {{ try_job_settings | tojson | safe}};
     findit.swarmingSettings = {{ swarming_settings | tojson | safe }};
+    findit.downloadBuildDataSettings = {{ download_build_data_settings | tojson | safe }}
 
     function getJsonOfTextarea(textId) {
       return JSON.parse($('#' + textId).val());
@@ -66,7 +67,8 @@
         'steps_for_masters_rules': getJsonOfTextarea('steps-for-masters-rules'),
         'builders_to_trybots': getJsonOfTextarea('builders-to-trybots'),
         'try_job_settings': getJsonOfTextarea('try-job-settings'),
-        'swarming_settings': getJsonOfTextarea('swarming-settings')
+        'swarming_settings': getJsonOfTextarea('swarming-settings'),
+        'download_build_data_settings': getJsonOfTextarea('download-build-data-settings')
       };
       $.post('/waterfall/config', { data: JSON.stringify(newConfig) }).done(function(){
         window.location.replace(createUrl(null));  // Reload after successful saving.
@@ -86,6 +88,7 @@
       $('#builders-to-trybots').val(getStringFromJson(findit.builders));
       $('#try-job-settings').val(getStringFromJson(findit.tryJobSettings));
       $('#swarming-settings').val(getStringFromJson(findit.swarmingSettings));
+      $('#download-build-data-settings').val(getStringFromJson(findit.downloadBuildDataSettings));
 
       if ({{ version }} < 2) {
         $('#previous-version-button').attr('disabled', 'disabled');
@@ -132,6 +135,10 @@
     Swarming Task Settings:<br>
     <textarea id="swarming-settings" rows="10" cols="80"></textarea>
   </div>
+  <div>
+    Download Build Data Settings:<br>
+    <textarea id="download-build-data-settings" rows="10" cols="80"></textarea>
+  </div>
   <br>
   <button type="submit" id="save-button">Save</button>
 </body>