feat(aio): comment cleanup, API table styles

- API table styling
- Cleanup on resource page comments

aio/tools/transforms/templates/includes/_class-overview.html

@@ -5,8 +5,7 @@
   <table class="api-table">
       <thead>
       <tr>
-        <th>{$ doc.name $} Properties</th>
-        <th></th>
+        <th colspan="2">{$ doc.name $} Properties</th>
       </tr>
       </thead>
       <tbody>

aio/tools/transforms/templates/includes/_metadata.html

@@ -1,5 +1,5 @@
 {% if doc.members.length %}
-<div class="meta-data">
+<div class="meta-data api-section">
   <h2>Metadata Properties</h2>
     {% for metadata in doc.members %}{% if not metadata.internal %}
     <div class="metadata-member">