Cleanup prior to review

cms/static/sass/xmodule/_image-zoom-tool.scss

@@ -9,8 +9,6 @@
         position: absolute;
         @include left(46%);
         top: 45%;
-        width: 50px;
-        height: 50px;
         background: $gray-d4;
         color: $white;
         font-size: 32px;

common/lib/xmodule/xmodule/templates/html/zooming_image.yaml

@@ -2,28 +2,26 @@
 metadata:
     display_name: Zooming Image Tool
 data: |
-      <h3 class="hd hd-2">Zooming Image Tool</h3>
+      <h3 class="hd hd-3">Zooming Image Tool</h3>
       <p>Use the Zooming Image Tool to enable learners to see details of large, complex images.</p>
       <p>With the Zooming Image Tool, the learner can move the mouse pointer over a part of the image to enlarge it and see more detail.</p>
       <p>To use the Zooming Image Tool, you must first add the <a href="http://files.edx.org/image-zoom-tool.js" target="_blank">image-zoom-tool.js JavaScript file</a> to your course.</p>
       <p>You must also add both the regular and magnified image files to your course.</p>
       <p>The following HTML code shows the format required to use the Zooming Image tool. For the example in this template, you must replace the values in <i>italics</i>.</p>
+      <p>Your small and large image should have the same aspect ratio.</p>
         <pre>
         &lt;div class="zooming-image-place" style="position: relative;"&gt;
           &lt;a class="edx-zoom" href="<i>path to the magnified version of the image</i>"&gt;
             &lt;img alt="<i>Text for screen readers</i>"
               src="<i>path to the image you want to display in the unit</i>" /&gt;
+              &lt;span class="indicator icon fa fa-search-plus" aria-hidden="true"&gt;&lt;/span&gt;
           &lt;/a>
           &lt;div class="script_placeholder"
             data-src="<i>path to the image-zoom-tool.js JavaScript file in your course</i>"/&gt;
         &lt;/div&gt;
         &lt;script type="text/javascript"&gt;// &gt;![CDATA[
         JavascriptLoader.executeModuleScripts($('.zooming-image-place').eq(0), function() {
-          $('.loupe').edxImageZoomTool({
-            width: 350,
-            height: 350,
-            lightbox: false
-          });
+          $('.edx-zoom').edxImageZoomTool();
         });
         // ]]&gt;&lt;/script&gt;
         &lt;div id="ap_listener_added"&gt;&lt;/div&gt;
@@ -48,11 +46,7 @@ data: |
       </div>
       <script type="text/javascript">// <![CDATA[
       JavascriptLoader.executeModuleScripts($('.zooming-image-place').eq(0), function() {
-        $('.edx-zoom').edxImageZoomTool({
-          width: 350,
-          height: 350,
-          lightbox: false
-        });
+        $('.edx-zoom').edxImageZoomTool();
       });
       // ]]></script>
       <div id="ap_listener_added"></div>

common/lib/xmodule/xmodule/tests/templates/test/zooming_image.yaml

@@ -2,7 +2,7 @@
 metadata:
     display_name: Zooming Image
 data: |
-      <h3 class="hd hd-2">Zooming Image Tool</h3>
+      <h3 class="hd hd-3">Zooming Image Tool</h3>
       <p>Some edX classes use extremely large, extremely detailed graphics. To make it easier to understand we can offer two versions of those graphics, with the zoomed section showing when you click on the main view.</p>
       <p>The example below is from <a href="https://www.edx.org/course/mit/7-00x/introduction-biology-secret-life/1014" target="_blank">7.00x: Introduction to Biology</a> and shows a subset of the biochemical reactions that cells carry out. </p>
       <p>You can view the chemical structures of the molecules by clicking on them. The magnified view also lists the enzymes involved in each step.</p>
@@ -15,11 +15,7 @@ data: |
       </div>
       <script type="text/javascript">// <![CDATA[
       JavascriptLoader.executeModuleScripts($('.zooming-image-place').eq(0), function() {
-        $('.edx-zoom').edxImageZoomTool({
-          width: 350,
-          height: 350,
-          lightbox: false
-        });
+        $('.edx-zoom').edxImageZoomTool();
       });
       // ]]></script>
       <div id="ap_listener_added"></div>

lms/static/sass/course/_image-zoom-tool.scss

@@ -9,8 +9,6 @@
         position: absolute;
         @include left(46%);
         top: 45%;
-        width: 50px;
-        height: 50px;
         background: $gray-d4;
         color: $white;
         font-size: 32px;