remove Gender Balance promo from 'house' template, replace with Democ…

…ratic Commons promo

views/house.erb

@@ -38,20 +38,15 @@
   </div>
 </div>
 
-<div class="page-section page-section--green page-section--gender-balance-promo">
+<div class="page-section page-section--green page-section--demo-commons-promo">
   <div class="container">
 
-    <div class="gender-balance-promo">
-      <h3>Help us collect gender information for <%= @page.country.name %> by playing our fiendishly addictive online game, Gender Balance!</h3>
-      <p>Swipe your way through politicians in a flash, and work your way up our leaderboard.</p>
-      <p><a href="http://gender-balance.org" class="button button--primary">Play Gender Balance now</a></p>
-
-      <a href="http://gender-balance.org" class="gender-balance-promo__demo">
-        <div class="screenshot-wrapper">
-          <img src="/images/screencast.gif" width="232" height="330" alt="Gender-Balance app preview">
-        </div>
-      </a>
+    <div class="demo-commons-promo">
+      <h3>Part of the Democratic Commons</h3>
+      <p>A growing community of individuals and organisations working to make information on every politician in the world freely available to all, through Wikidata.</p>
+      <p><a href="https://www.mysociety.org/democracy/democratic-commons/">Help gather the data, use it for your own projects — or give us feedback </a></p>
     </div>
 
   </div>
 </div>
+