docs(template-syntax): add "Table of Contents"

prototype for standard ToC across all docs.
closes #882

public/docs/ts/latest/guide/template-syntax.jade

@@ -6,7 +6,9 @@ include ../_util-fns
 
   Many of us are familiar with the component/template duality from our experience with model-view-controller (MVC) or model-view-viewmodel (MVVM). In Angular,  the component plays the part of the controller/viewmodel, and the template represents the view.
 
-  Let’s find out what it takes to write a template for our view. We’ll cover these basic elements of template syntax:
+  Let’s find out what it takes to write a template for our view. We’ll cover these basic elements of template syntax.
+
+  # Table Of Contents
 
   * [HTML](#html)
   * [Interpolation](#interpolation)
@@ -27,11 +29,14 @@ include ../_util-fns
   * [Local template variables](#local-vars)
   * [Input and output properties](#inputs-outputs)
   * [Template expression operators](#expression-operators)
+    * [pipe](#pipe)
+    * ["elvis" (?.)](#elvis)  
 // #enddocregion intro
-
-:marked
-  [Run the live example](/resources/live-examples/template-syntax/ts/plnkr.html)
-
+.l-sub-section
+  :marked
+    The [live example](/resources/live-examples/template-syntax/ts/plnkr.html) 
+    demonstrates all of the syntax and code snippets described in this chapter.
+  
 // #docregion html-1
 .l-main-section
 :marked
@@ -1596,7 +1601,7 @@ figure.image-display
   <a id="elvis"></a>
   ### The Elvis operator ( ?. ) and null property paths
 
-  The Angular **Elvis operator (`?.`)** is a fluent and convenient way to guard against null and undefined values in property paths.
+  The Angular **Elvis operator (`?.`)** &mdash; perhaps better described as the "safe navigation operator" &mdash; is a fluent and convenient way to guard against null and undefined values in property paths.
   Here it is, protecting against a view render failure if the `currentHero` is null.
 // #enddocregion expression-operators-elvis-1
 +makeExample('template-syntax/ts/app/app.component.html', 'elvis-2')(format=".")