Add locale link in template

lib/template/locale.snippet.en

@@ -0,0 +1,4 @@
+<ul>
+<li><a href="?locale=en">English</a></li>
+<li><a href="?locale=zh_tw">中文版</a></li>
+</ul>

lib/template/locale.snippet.zh_tw

@@ -0,0 +1,4 @@
+<ul>
+<li><a href="?locale=en">English</a></li>
+<li><a href="?locale=zh_tw">中文版</a></li>
+</ul>

lib/template/root.layout.en

@@ -17,6 +17,7 @@
 	</div>
 
     <div id="footer">
+         {{ 'locale' | render_snippet }}
          {{ 'footer' | render_snippet }}
     </div>
     

lib/template/root.layout.zh_tw

@@ -17,6 +17,7 @@
 	</div>
 
     <div id="footer">
+         {{ 'locale' | render_snippet }}
          {{ 'footer' | render_snippet }}
     </div>