Change code editor icon to say HTML.

common/static/js/vendor/tiny_mce/plugins/codemirror/plugin.js

@@ -38,9 +38,11 @@ tinymce.PluginManager.add('codemirror', function(editor, url) {
 	};
 
 	// Add a button to the button bar
+    // EDX changed to show "HTML" on toolbar button
 	editor.addButton('code', {
 		title: 'Edit HTML',
-		icon: 'code',
+        text: 'HTML',
+		icon: false,
 		onclick: showSourceEditor
 	});
 

common/static/js/vendor/tiny_mce/plugins/codemirror/plugin.min.js

 tinymce.PluginManager.requireLangPack("codemirror");
 tinymce.PluginManager.add("codemirror",function(a,c){function b(){a.focus();a.selection.collapse(!0);a.selection.setContent('<span class="CmCaReT" style="display:none">&#0;</span>');var b=a.windowManager.open({title:"HTML source code",url:c+"/source.html",width:800,height:550,resizable:!0,maximizable:!0,buttons:[{text:"Ok",subtype:"primary",onclick:function(){document.querySelectorAll(".mce-container-body>iframe")[0].contentWindow.submit();b.close()}},{text:"Cancel",onclick:"close"}]})}a.addButton("code",
-{title:"Edit HTML",icon:"code",onclick:b});a.addMenuItem("code",{icon:"code",text:"Edit HTML",context:"tools",onclick:b})});
+{title:"Edit HTML",text:"HTML",icon:false,onclick:b});a.addMenuItem("code",{icon:"code",text:"Edit HTML",context:"tools",onclick:b})});