Magento 1.9 RWD Theme – TypeError: image.elevateZoom is Not a Function

You are going into the right direction, but you need to do some modifications:

1. addToParentGroup and setTitle are used to show content in review so add this code below

   <action method="addToParentGroup"><group>detailed_info</group></action>
   <action method="setTitle" translate="value"><value>Reviews</value></action>
   

2. you need to change block alias name of block type review/product_view_list to product_additional_data_review as product_additional_data alias name already exists in product.

   <block type="review/product_view_list" name="product.info.product_additional_data_review" as="product_additional_data_review" template="review/product/view/list.phtml">
       <action method="addToParentGroup"><group>detailed_info</group></action>
       <action method="setTitle" translate="value"><value>Reviews</value></action>
   
       <block type="review/form" name="product.review.form" as="review_form">
           <block type="page/html_wrapper" name="product.review.form.fields.before" as="form_fields_before" translate="label">
               <label>Review Form Fields Before</label>
               <action method="setMayBeInvisible"><value>1</value></action>
           </block>
       </block>
   </block>
   

I solve Remove render-blocking JavaScript issue on Magento-1.9.x as follows:

<script src="filename.js"></script>
Replace with Following:  
<script src="filename.js" defer></script>
<script src="filename.js" async="async"></script>

or

<action method="addJs"><script>prototype/prototype.js</script></action>  
Replace with Following:  
<action method="addJs"><script>prototype/prototype.js</script><params>defer</params></action>  
<action method="addJs"><script>prototype/prototype.js</script><params>async</params></action>

hints: it may locate on base theme

app\design\frontend\base\default\layout\page.xml about line:38,

If you use active theme different path ex for rwd as app\design\frontend\base\default\layout\page.xml