Added "Edit this page" to footer

_includes/footer.html

     <div class="footer">
       <div class="container">
         <p>
-          <strong style="color: #ffffff;">[ <a href="/legal/terms">{% t global.terms %}</a> | <a href="/legal/privacy">{% t global.privacy %}</a> | <a href="/legal/copyright">{% t global.copyright %}</a> ]</strong>
+          <strong style="color: #ffffff;">[ <a href="/legal/terms">{% t global.terms %}</a> | <a href="/legal/privacy">{% t global.privacy %}</a> | <a href="/legal/copyright">{% t global.copyright %}</a> | <a href="https://github.com/monero-project/monero-site/blob/master/{{ page.path }}">{%t global.edit %}</a> ]</strong>
           <a href="https://getmonero.org/feed.xml"><i class="fa fa-2x fa-rss-square"></i></a>
           <a href="mailto:dev@getmonero.org"><i class="fa fa-2x fa-envelope-square"></i></a>
         </p>
@@ -13,7 +13,7 @@
     <script src="//static.getmonero.org/scripts.js"></script>
     <script type="text/javascript">
         $(document).ready(function(){
-            $('[data-toggle="tooltip"]').tooltip();   
+            $('[data-toggle="tooltip"]').tooltip();
         });
 
 		(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){

_strings_en.yml

@@ -13,6 +13,7 @@ global:
   terms: Terms
   privacy: Privacy
   copyright: Copyright
+  edit: Edit this page
 menu:
   forum: Forum
   blog: Blog