Merge pull request #2376 from edx/db/fix-studio-signup-form-action

/register_post is an invalid URL

cms/templates/signup.html

@@ -17,7 +17,7 @@
     <p class="introduction">${_("Ready to start creating online courses? Sign up below and start creating your first edX course today.")}</p>
 
     <article class="content-primary" role="main">
-      <form id="register_form" method="post" action="register_post">
+      <form id="register_form" method="post">
         <div id="register_error" name="register_error" class="message message-status message-status error">
         </div>