added front page samples to testing, plus a couple of tweaks to front page and code lab

src/tests/site/code/futures.dart

Index: src/tests/site/code/futures.dart
diff --git a/src/tests/site/code/futures.dart b/src/tests/site/code/futures.dart
deleted file mode 100644
index f7f9d54eb23283e2cf3a940093e52c75c3ace4e7..0000000000000000000000000000000000000000
--- a/src/tests/site/code/futures.dart
+++ /dev/null
@@ -1,14 +0,0 @@
-import 'dart:io';
-import 'dart:async';
-
-void printDailyNewsDigest() {
-  File file = new File('dailyNewsDigest.txt');
-  file.readAsString()                  // readAsString() returns a Future.
-    .then((content) => print(content)) // Handle successful completion.
-    .catchError((error) =>             // Handle failure.
-        print("Sorry, no news today. Here's why:\n$error"));
-}
-
-main() {
-  printDailyNewsDigest();
-}