Adding Angular and dependent packages for testing

third_party/pkg/route_hierarchical/example/full/css/bootstrap.css

Index: third_party/pkg/route_hierarchical/example/full/css/bootstrap.css
diff --git a/samples/third_party/angular_todo/bootstrap.css b/third_party/pkg/route_hierarchical/example/full/css/bootstrap.css
similarity index 99%
copy from samples/third_party/angular_todo/bootstrap.css
copy to third_party/pkg/route_hierarchical/example/full/css/bootstrap.css
index b725064aab21e434d29209d259d3892478aa9536..2f56af33f3b1322162ec85cb929348d14729f5de 100644
--- a/samples/third_party/angular_todo/bootstrap.css
+++ b/third_party/pkg/route_hierarchical/example/full/css/bootstrap.css
@@ -1,5 +1,5 @@
 /*!
- * Bootstrap v2.3.2
+ * Bootstrap v2.3.1
  *
  * Copyright 2012 Twitter, Inc
  * Licensed under the Apache License v2.0
@@ -3009,15 +3009,6 @@ table th[class*="span"],
   display: block;
 }
 
-.dropdown-backdrop {
-  position: fixed;
-  top: 0;
-  right: 0;
-  bottom: 0;
-  left: 0;
-  z-index: 990;
-}
-
 .pull-right > .dropdown-menu {
   right: 0;
   left: auto;