Add missing trans tags

templates/home.html

@@ -22,7 +22,7 @@
     </div>
 
     <div class="col-md-4">
-      <h3>More information</h3>
+      <h3>{% trans "More information" %}</h3>
       <div class="btn-group">
         <a class="btn btn-primary" target="_blank" href="http://www.memopol.org/">
           {% bootstrap_icon "bookmark" %}
@@ -36,7 +36,7 @@
     </div>
 
     <div class="col-md-4">
-      <h3>Contact us</h3>
+      <h3>{% trans "Contact us" %}</h3>
       <div class="btn-group">
         <a class="btn btn-primary" target="_blank" href="https://twitter.com/memopol2">
           <img class="social-icon" src="{% static 'images' %}/social-twitter.png">
@@ -50,7 +50,7 @@
     </div>
 
     <div class="col-md-4">
-      <h3>Contributing</h3>
+      <h3>{% trans "Contributing" %}</h3>
       <div class="btn-group">
         <a class="btn btn-default" target="_blank" href="https://github.com/political-memory/political_memory">
           {% bootstrap_icon "cog" %}