build(aio): remove formatting and styles from dgeni templates

Much of the formatting was hardcoded and copied from the old anguar.io
jade files. This gives us a clean start.

Also, more use has been made of include files to make the templates
easier to understand and manage.

docs/templates/includes/_statics.html

@@ -0,0 +1,23 @@
+{% if doc.statics.length %}
+<section class="static-members">
+  <h2>Static Members</h2>
+  <div class="description">
+  {% for member in doc.statics %}{% if not member.internal %}
+    <div class="static-member">
+      <a name="{$ member.name $}-anchor" class="anchor-offset"></a>
+      <pre class="prettyprint no-bg" ng-class="{ 'anchor-focused': appCtrl.isApiDocMemberFocused('{$ member.name $}') }">
+        <code>{$ member.name $}{$ params.paramList(member.parameters) | trim $}{$ params.returnType(member.returnType) $}</code>
+      </pre>
+      {%- if not member.notYetDocumented %}
+      {$ member.description | replace('### Example', '') | replace('## Example', '') | replace('# Example', '') | trimBlankLines | marked $}
+      {% endif %}
+    </div>
+
+    {% if not loop.last %}
+    <hr class="hr-margin">
+    {% endif %}
+
+  {% endif %}{% endfor %}
+  </div>
+</section>
+{% endif %}