removing Web UI tutorials, updating remaining 4 to current release, + review pass

src/site/polymer-dart/index.markdown

 --- 
 layout: default
 title: "Polymer.dart"
 description: "Standards-based web components:
 custom elements, templates,
 and data binding for Dart web apps. A Dart port of Polymer."
 has-permalinks: true
 ---
 
 <style>
@@ skipping 99 matching lines @@
 
 Built on emerging web standards,
 available to you today.
 
 </div>
 
 </div>
 
 <hr>
 
 ## Examples

[Kathy Walrath, 2013/10/11 16:36:03]

It seems to me that you might also add something about the tutorials here. (By
the way, this abuts the following section head: gross!) Something like:

Here's some code that uses Polymer.dart. Also see the Dart tutorial, [Creating a
Custom Element](...), which ...

[mem, 2013/10/11 18:21:30]

Done.

 
 ### Custom elements
 
 Extend the lexicon of HTML with your own custom elements.
 
 Below is a simple custom element. More advanced custom elements
 can contain their own styles, custom behavior, attributes,
 data binding, and more.  
 
 {% prettify html %}
@@ skipping 309 matching lines @@
 | Web animations | Not started
 | [Polymer base elements](https://github.com/Polymer/polymer-elements) | Not started
 | [Polymer UI elements](https://github.com/Polymer/polymer-ui-elements) | Not started
 {: .table}
 
 <hr>
 
 ## Additional reading
 
 The cultured Dartisan studies the specifications and articles that cover
 the lower-level primitives and features of the polymer.dart libraries.

[Kathy Walrath, 2013/10/11 16:36:03]

Cute, but it needs some adjusting for the more introductory stuff at the top.

[mem, 2013/10/11 18:21:30]

I gave the tutorials a header promotion and moved it above the additional
reading section.

On 2013/10/11 16:36:03, Kathy Walrath wrote:

 
+### Tutorials
+
+[Define a Custom Element](/docs/tutorials/polymer-intro/),
+part of the
+[Dart Tutorials](/docs/tutorials/),

[Kathy Walrath, 2013/10/11 16:36:03]

Is it "the [Dart Tutorials]" or "[The Dart Tutorials]"? ("the [Dart tutorials]"
seems fine if you want to be informal)

[mem, 2013/10/11 18:21:30]

Done.

+provides a detailed introduction to using Polymer.dart to create
+custom elements.

[Kathy Walrath, 2013/10/11 16:36:03]

You could mention that other tutorials also use Polymer.dart, perhaps pointing
to the "What next?" section.

[mem, 2013/10/11 18:21:30]

Done.

+
 ### Polymer
 
 * Read Polymer's [guiding principles](http://www.polymer-project.org/#guiding-principles)
 * Watch the [Hello, Polymer!](http://www.youtube.com/watch?v=irGDN5Ysi_A)
   video featuring some of the lead members of Polymer.
 
 ### Articles
 
 * [HTML5Rocks - Shadow DOM 101](http://www.html5rocks.com/en/tutorials/webcomponents/shadowdom/)
 
@@ skipping 33 matching lines @@
 
 [polymer]: http://www.polymer-project.org
 [so]: http://stackoverflow.com/tags/dart
 [web-ui-list]: https://groups.google.com/a/dartlang.org/forum/#!forum/web-ui
 [polymer-dev-list]: https://groups.google.com/forum/?fromgroups=#!forum/polymer-dev
 [dartbug]: http://dartbug.com/new
 [custom-elements-spec]: https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/custom/index.html
 [shadow-dom-spec]: https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/shadow/index.html
 [html-imports-spec]: https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/imports/index.html
 [template-spec]: https://dvcs.w3.org/hg/webcomponents/raw-file/tip/spec/templates/index.html