more link tweaking

src/site/docs/tutorials/templates/index.markdown

 ---
 layout: default
 title: "Use Templates"
 description: "Use template loops and conditionals for declarative UI creation."
 has-permalinks: true
 tutorial:
   id: web-ui-templates
-next: custom-elements
+next: custom-elements/
 next-title: "Define a Custom DOM Tag"
-prev: web-ui
+prev: web-ui/
 prev-title: "Get Started with Web UI"
 ---
 
 {% capture whats_the_point %}
 
 * The Web UI package implements templates in HTML.
 * You can conditionally activate DOM elements declaratively.
 * Use template loops to create UI elements from a Dart Iterable.
 
 {% endcapture %}
@@ skipping 28 matching lines @@
 </div>
 
 <hr>
 
 <aside class="alert" style="background-color:Lavender;color:SlateBlue">
   <font size="24">
   <i class="icon-bullhorn"> </i>
   </font>
 
   The Dart Web UI team recently
-  <a href="https://groups.google.com/a/dartlang.org/forum/#!topic/web-ui/6laXXxRtA7k">announced</a>
+  <a href="https://groups.google.com/a/dartlang.org/forum/#!topic/web-ui/6laXXxRtA7k" target="_blank">announced</a>
   a port of the Polymer project:
-  <a href="http://pub.dartlang.org/packages/polymer">polymer.dart</a>.
+  <a href="https://pub.dartlang.org/packages/polymer" target="_blank">polymer.dart</a>.
 
   We've converted most of the tutorial Web UI examples and compiled some
   <a href="https://github.com/dart-lang/dart-tutorials-samples/blob/master/web/to-polymer-notes.txt" target="_blank">notes</a>
   along the way.
   Here is source code for the polymer versions of the three examples from this target:
   <ul>
     <li>
       <a href="https://github.com/dart-lang/dart-tutorials-samples/tree/master/web/target07-polymer/adlibitum"
          target="_blank">adlibitum</a>
     </li>
@@ skipping 35 matching lines @@
 ##Using conditional instantiation
 
 In the example application running below,
 you provide six words to fill in the blanks of a hidden text.
 Try it! Type six items into the input fields.
 The results appear only after you have entered a value for all six items.
 After you've entered all six items, delete one. The paragraph disappears.
 
 <iframe class="running-app-frame"
         style="height:300px;width:300px;"
-        src="http://dart-lang.github.com/dart-tutorials-samples/web/target07/adlibitum/web/out/adlibitum.html">
+        src="http://dart-lang.github.io/dart-tutorials-samples/web/target07/adlibitum/web/out/adlibitum.html">
 </iframe>
 
 You can find the complete source code for this sample on github at
 <a href="https://github.com/dart-lang/dart-tutorials-samples/tree/master/web/target07/adlibitum" target="_blank">adlibitum</a>.
 
 The sample uses a template conditional
 to display the paragraphs under the input fields.
 
 ![Paragraph elements are conditionally instantiated](images/template-conditional.png)
 
@@ skipping 38 matching lines @@
 in which some of the text is bound to the values in input fields.
 
 ##Using iteration with templates
 
 The sample running below
 is a simplified version of the children's hangman game.
 Try it! Type letters in the field to guess the word.
 
 <iframe class="running-app-frame"
         style="height:250px;width:300px;"
-        src="http://dart-lang.github.com/dart-tutorials-samples/web/target07/simplehangman/web/out/simplehangman.html">
+        src="http://dart-lang.github.io/dart-tutorials-samples/web/target07/simplehangman/web/out/simplehangman.html">
 </iframe>
 
 You can find the complete source code for this sample on github at
 <a href="https://github.com/dart-lang/dart-tutorials-samples/tree/master/web/target07/simplehangman" target="_blank">simplehangman</a>.
 
 The hangman example uses template iteration in two places:
 to reveal the correctly guessed letters in the
 hyphenated version of the hidden word
 and to display the list of incorrectly guessed letters.
 
@@ skipping 32 matching lines @@
 The following diagram shows the relationship between
 the Dart code, the HTML code, and the UI
 that manages the list of incorrectly guessed letters.
 
 ![Using template loops to display a list of strings](images/wrongletters-detail.png)
 
 The &lt;template&gt; tag has an attribute called `iterate`.
 The value of this attribute takes the form 
 <code><em>loopvar</em> in <em>iterable</em></code>,
 where _iterable_ is a Dart expression that evaluates to an
-<a href="http://api.dartlang.org/dart_core/Iterable.html"
+<a href="https://api.dartlang.org/dart_core/Iterable.html"
    target="_blank">Iterable</a>
 object.
 The template iterates over the iterable object
 and assigns each value to _loopvar_,
 a new variable that is in scope for the body of the template iterate element.
 The HTML code for this example
 uses one-way data binding to embed
 the value of `wrongchar` in the page,
 thus displaying a list of characters.
 
 ##Using iteration with other elements {#as-attributes}
 
 The simplehangman example used the iterate attribute on a template node.
 You can use `template iterate` as an attribute on any type of element.
 This is particularly useful in tables
 because you cannot use templates in tables.
 In the future, the Web UI team intends to remove the extra `template`
 attribute, and you will be able to use just `iterate` directly
 on elements as well as on templates.
 
 Here's a new version of the hangman example.
 Try it! Guess the word.
 
 <iframe class="running-app-frame"
         style="height:250px;width:350px;"
-        src="http://dart-lang.github.com/dart-tutorials-samples/web/target07/hangman/web/out/hangman.html">
+        src="http://dart-lang.github.io/dart-tutorials-samples/web/target07/hangman/web/out/hangman.html">
 </iframe>
 
 You can find the complete source code for this sample on github at
 <a href="https://github.com/dart-lang/dart-tutorials-samples/tree/master/web/target07/hangman" target="_blank">hangman</a>.
 
 The gallows is displayed using a table.
 The table uses `template iterate` as an attribute on
 the table body and on the table row to
 display the characters in the hangman display.
 
@@ skipping 68 matching lines @@
     Sigmund Cherem's article,
     <a href="/articles/dart-web-components/">Web UI Package</a>,
     contains several interactive examples on the page
     and the corresponding source code.
   </li>
 </ul>
 
 {% endcapture %}
 
 {% include tutorial.html %}