chore(doc-gen): add ids to members to allow direct linking

You can now write a link to a member of a class by appending the member name
to the class name joined by a hash sign:

```
{@link ControlGroupDirective#addDirective `addDirective`}
```

By default the link will contain the text of the class rather than the member
so you must add it as an inline code text snippet in the link tag.

Closes #1432

docs/app/index.html

@@ -47,7 +47,7 @@
 
 
     <md-content class="md-padding">
-      <ng-include src="nav.currentPage.partial"></ng-include>
+      <ng-include autoscroll src="nav.currentPage.partial"></ng-include>
     </md-content>
 
   </section>

docs/dgeni-package/templates/class.template.html

@@ -12,7 +12,7 @@ defined in <a href="https://github.com/angular/angular/tree/master/modules/{$ do
 
 {%- if doc.constructorDoc %}
   <section class="member constructor">
-    <h1 class="name">{$ doc.constructorDoc.name $}{$ paramList(doc.constructorDoc.params) $}</h1>
+    <h1 id="constructor" class="name">{$ doc.constructorDoc.name $}{$ paramList(doc.constructorDoc.params) $}</h1>
     {% marked %}
       {$ doc.constructorDoc.description $}
     {% endmarked %}
@@ -21,7 +21,7 @@ defined in <a href="https://github.com/angular/angular/tree/master/modules/{$ do
 
 {%- for member in doc.members %}{% if not member.private %}
   <section class="member">
-    <h1 class="name">{$ member.name $}{$ paramList(member.params) $}</h1>
+    <h1 id="{$ member.name $}" class="name">{$ member.name $}{$ paramList(member.params) $}</h1>
     {% marked %}
       {$ member.description $}
     {% endmarked %}