Specify MIME type when adding SCRIPT tag

This change is needed to prevent Studio from stripping this SCRIPT tag
from the input.

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

@@ -5,4 +5,8 @@ data: |
         <h2>Full Screen Image</h2>
         <p>Use the full screen image tool to allow students to open the image in the full screen, zoom in on the image, and drag the image within the screen.</p>
         <a href="http://static.class.stanford.edu/stanford-hills-big.jpg" class="modal-content"><img alt="The Stanford Hills" src="http://static.class.stanford.edu/stanford-hills-small.jpg" /></a>
-        <script>$(function () {setupFullScreenImage();});</script>
+        <script type="text/javascript">
+            $(function () {
+                setupFullScreenImage();
+            });
+        </script>