add two subpages for different signing steps, and improve headline behaviour

site/content/openletter/confirm.en.md

@@ -0,0 +1,11 @@
+---
+title: "Almost done..."
+type: page
+layout: subpage
+---
+
+## One step left to sign the Open Letter
+
+Thank you for your interest in signing the Open Letter for **Public Money, Public Code**.
+
+For your signature to be valid you have to confirm your email address. We sent you an email with a confirmation link and further instructions. Thank you!

site/content/openletter/success.en.md

@@ -0,0 +1,15 @@
+---
+title: "Your signature is verified"
+type: page
+layout: subpage
+---
+
+## Thank you
+
+You have successfully confirmed your signature! If you agreed to have your support to be public, your name will appear in the [list of signatures](/openletter/#signatures) within the next hour.
+
+Thank you for supporting our call to make publicly financed software Free Software. With your support we will tell decision makers all over Europe that Free and Open Source Software is the best solution for public administrations to publish their code.
+
+You can help us to make this campaign more successful. Please [share this message](/#spread) with your friends. You can also [order stickers and informational material](https://fsfe.org/promo#pmpc) from the Free Software Foundation Europe.
+
+If you think Free Software in Europe has to be stronger, consider [supporting the FSFE](https://fsfe.org/donate/?pmpc).

site/static/css/custom.css

@@ -2,6 +2,10 @@
 .bg-primary a {
   color: #fff;
 }
+h2 {
+  margin-top: 30px;
+  margin-bottom: 20px;
+}
 
 /* SUBPAGES */
 .subpage {