added new tag

common/lib/capa/capa/inputtypes.py

@@ -800,12 +800,12 @@ class DragAndDropInput(InputTypeBase):
     @classmethod
     def get_attributes(cls):
         """
-        Note: height, width, template and images are required.
+        Note: height, width, images_directory_path are required.
         """
+        images_directory_path =  Attribute('images_directory_path')
         return [Attribute('height'),
                 Attribute('width'),
-                Attribute('template'),
-                Attribute('images'),
+                images_directory_path,
                 ]
 
 registry.register(DragAndDropInput)

common/lib/capa/capa/templates/drag_and_drop_input.html

 <section id="inputtype_${id}" class="capa_inputtype" >
     <div class="drag_and_drop_problem" id="drag_and_drop_div_${id}"
-    style="width:${width};height:${height}"
-    data-template="${template}" data-images="${images}"></div>
+    style="width:${width};height:${height}">
+        % if item
+            <ul>
+                % for item in images_directory_path:
+                    <li>${item}</li>
+                % endfor
+            </ul>
+        % endif
+    </div>
 
     <div class="script_placeholder" data-src="/static/js/raphael.js"></div>