Add log and link aliasing to BuildBot.

masters/master.chromium.perf.fyi/templates/build.html

Index: masters/master.chromium.perf.fyi/templates/build.html
diff --git a/masters/master.chromium.perf.fyi/templates/build.html b/masters/master.chromium.perf.fyi/templates/build.html
index 0bf2a5c931dfc6cbb4c6a4179a0d8d0dde8b1f3e..d474f968335ac566f538d92c03847d5512329d61 100644
--- a/masters/master.chromium.perf.fyi/templates/build.html
+++ b/masters/master.chromium.perf.fyi/templates/build.html
@@ -145,19 +145,33 @@ Build #{{ b.getNumber() }}
     <ul>
       {% set item_class = cycler('alt', '') %}
       {% for l in s.logs %}
-        <li class="{{ item_class.next() }}"><a href="{{ l.link }}">{{ l.name }}</a>
+        <li class="{{ item_class.next() }}">
+          <a href="{{ l.link }}">{{ l.name }}</a>
           <a href="https://storage.cloud.google.com/chrome-build-logs-private/logs/{{
                    b.getProperty('mastername') }}/{{ b.getBuilder().getName()
                    }}/{{ '%.7d' % b.getNumber() }}/{{ s.name|replace('/', '_') }}.{{
                    l.name|replace('/', '_') }}"
              title="Raw log stored on Google Cloud Storage (available after up to 5 min after end of build)">cache</a>
-</li>
+
+          {% if s.aliases %}

[dnj, 2016/03/18 01:52:46]

This should protect existing non-restarted waterfalls from not having emitted
the "alias" property to the template engine.

+            {% for a in s.aliases.get(l.name, ()) %}
+              <a href="{{ a.url }}">[{{ a.text }}]</a>

[dnj, 2016/03/18 01:52:45]

Renders as: link [alias] [alias]

+            {% endfor %}
+          {% endif %}
+        </li>
       {% else %}
         <li class="{{ item_class.next() }}">- no logs -</li>
       {% endfor %}
-    
+
       {% for u in s.urls %}
-        <li class="{{ item_class.next() }}"><a href="{{ u.url }}">{{ u.logname }}</a></li>
+        <li class="{{ item_class.next() }}">
+          <a href="{{ u.url }}">{{ u.logname }}</a>
+          {% if s.aliases %}
+            {% for a in s.aliases.get(u.logname, ()) %}
+              <a href="{{ a.url }}">[{{ a.text }}]</a>
+            {% endfor %}
+          {% endif %}
+        </li>
       {% endfor %}
     </ul>  
   </li>