Add basic swarming UI tests

appengine/swarming/ui/res/imp/common/pageable-data-demo.html

Index: appengine/swarming/ui/res/imp/common/pageable-data-demo.html
diff --git a/appengine/swarming/ui/res/imp/common/pageable-data-demo.html b/appengine/swarming/ui/res/imp/common/pageable-data-demo.html
index 5a2fcca9df9d53f6c8b1d9dbcdaf2e3f81af2559..c20497b532fabe2c8f6460847446f50f57a84345 100644
--- a/appengine/swarming/ui/res/imp/common/pageable-data-demo.html
+++ b/appengine/swarming/ui/res/imp/common/pageable-data-demo.html
@@ -22,8 +22,13 @@
     sinon.format = function(object) {return JSON.stringify(object);}
     sinon.log = function(message) {console.log(message);};
     var server = sinon.fakeServer.create();
-    server.autoRespond = true;
-    // server.autoRespondAfter = 1000;
+    if (!window.chai) {
+      // If chai is defined, we are unit testing, so we don't want the delay
+      // in the responses.  If we aren't unit testing, we are in demo page
+      // mode and add in the delay for realism.
+      server.autoRespond = true;
+      server.autoRespondAfter = 1000;
+    }
 
     var data = [];
     for (var i = 0; i < 27; i++) {
@@ -85,7 +90,6 @@
           type: Function,
           value: function() {
             return function(json) {
-              console.log("hello parse");
               return json.data;
             };
           },