Consolidate textbox styling into codemirror.css

common/lib/capa/capa/templates/textbox.html

@@ -27,9 +27,6 @@
 
   <br/>
 
-  <script type="text/javascript" src="${ settings.LIB_URL }CodeMirror/codemirror.js"></script>
-  <script type="text/javascript" src="${ settings.LIB_URL }CodeMirror/python.js"></script>
-  <link rel="stylesheet" href="${ settings.LIB_URL }CodeMirror/codemirror.css" />
   <script>
     // Note: We need to make the area follow the CodeMirror for this to work.
     $(function(){
@@ -41,8 +38,4 @@
       });
     });
   </script>
-  <style type="text/css">
-    .CodeMirror {border-style: solid;
-      border-width: 1px;}
-  </style>
 </section>

lms/static/css/codemirror.css

 .CodeMirror {
+  border: 2px solid black;
   line-height: 1em;
   font-family: monospace;
 }