WIP at turning MemberInfo into a ContextualMenu

src/Modal.js

@@ -47,11 +47,11 @@ module.exports = {
         // FIXME: If a dialog uses getDefaultProps it clobbers the onFinished
         // property set here so you can't close the dialog from a button click!
         var dialog = (
-            <div className="mx_Dialog_Wrapper">
+            <div className="mx_Dialog_wrapper">
                 <div className="mx_Dialog">
                     <Element {...props} onFinished={closeDialog}/>
                 </div>
-                <div className="mx_Dialog_Background" onClick={closeDialog}></div>
+                <div className="mx_Dialog_background" onClick={closeDialog}></div>
             </div>
         );