denote raw cell with 'Raw Text' in UI

IPython/frontend/html/notebook/templates/notebook.html

@@ -107,7 +107,7 b' data-notebook-id={{notebook_id}}'
                 <hr/>
                 <li id="to_code"><a href="#">Code</a></li>
                 <li id="to_markdown"><a href="#">Markdown </a></li>
-                <li id="to_raw"><a href="#">Raw</a></li>
+                <li id="to_raw"><a href="#">Raw Text</a></li>
                 <li id="to_heading1"><a href="#">Heading 1</a></li>
                 <li id="to_heading2"><a href="#">Heading 2</a></li>
                 <li id="to_heading3"><a href="#">Heading 3</a></li>
@@ -171,7 +171,7 b' data-notebook-id={{notebook_id}}'
         <select id="cell_type">
              <option value="code">Code</option>
              <option value="markdown">Markdown</option>
-             <option value="raw">Raw</option>
+             <option value="raw">Raw Text</option>
              <option value="heading1">Heading 1</option>
              <option value="heading2">Heading 2</option>
              <option value="heading3">Heading 3</option>