adding training zones links to analysis page and menu

rowers/templates/analysis.html

@@ -108,6 +108,17 @@
       See which of your workouts are markers of your fitness, and how your scores
 			evolve over time.
     </p>
+  </li>
+	<li class="rounder">
+    <h2>Training Zones</h2>
+      <a href="/rowers/trainingzones/">
+      <div class="vignet">
+        <img src="/static/img/zones2.png" alt="Zones">
+      </div>
+      </a>
+    <p>
+      See in what training zone you have been training in the past weeks and months.
+    </p>
   </li>
   <li class="rounder">
     <h2>Alerts</h2>