Issue 2432 - Auto-generate browser versions on requirements page

pages/requirements.tmpl

Index: pages/requirements.tmpl
===================================================================
rename from pages/requirements.html
rename to pages/requirements.tmpl
--- a/pages/requirements.html
+++ b/pages/requirements.tmpl
@@ -1,45 +1,32 @@
 title=Adblock Plus system requirements
 
+{%- macro browser_versions(browser_name, internal_name, versions) %}
+<h2 id="{{ internal_name }}">{{ browser_name }}</h2>
+<ul>
+  {%- set versions = versions or get_browser_versions(internal_name) %}
+  {%- if versions.previous %}
+  <li>{{ browser_name }} {{ versions.previous }}</li>
+  {%- endif %}
+  <li>{{ browser_name }} {{ versions.current }}</li>
+  {%- for version in versions.unreleased %}
+  <li>{{ browser_name }} {{ version }}{{ ': Using <a href="development-builds">Adblock Plus development builds</a> is recommended.'|translate("s3") }}</li>
+  {%- endfor %}
+</ul>
+{%- endmacro %}
 
 <p>
-  {{s1 Adblock Plus is a platform-independent extension, which means that it can be installed on any
-  operating system provided that a host application is available.}} {{s2 Supported
-  programs and versions are listed below.}}
+  {{ "Adblock Plus is a platform-independent extension, which means that it can be installed on any operating system provided that a host application is available."|translate("s1") }}
+  {{ "Supported programs and versions are listed below."|translate("s2") }}
 </p>
 
-<h2 id="firefox">Firefox</h2>
+{% set firefox_versions = get_browser_versions("firefox") -%}
+{{ browser_versions("Firefox", "firefox", firefox_versions) }}
 
-<ul>
-  <li>Firefox 36</li>
-  <li>Firefox 37</li>
-  <li>Firefox 38{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Firefox 39{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Firefox 40{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-</ul>
+{{ browser_versions("Google Chrome", "chrome") }}
 
-<h2 id="chrome">Google Chrome</h2>
+{{ browser_versions("Opera", "opera") }}
 
-<ul>
-  <li>Google Chrome 41</li>
-  <li>Google Chrome 42</li>
-  <li>Google Chrome 43</li>
-  <li>Google Chrome 44</li>
-</ul>
-
-<h2 id="opera">Opera</h2>
-
-<ul>
-  <li>Opera 28</li>
-  <li>Opera 29</li>
-  <li>Opera 30</li>
-  <li>Opera 31</li>
-</ul>
-
-<h2 id="opera">Safari</h2>
-
+<h2 id="safari">Safari</h2>
 <ul>
   <li>Safari 6.0</li>
   <li>Safari 6.1</li>
@@ -48,7 +35,6 @@
 </ul>
 
 <h2 id="internet-explorer">Internet Explorer</h2>
-
 <ul>
   <li>Internet Explorer 8</li>
   <li>Internet Explorer 9</li>
@@ -56,47 +42,10 @@
   <li>Internet Explorer 11</li>
 </ul>
 
-<h2 id="thunderbird">Yandex.Browser</h2>
+{{ browser_versions("Yandex.Browser", "yandex") }}
 
-<ul>
-  <li>Yandex.Browser 15.2</li>
-  <li>Yandex.Browser 15.4</li>
-</ul>
+{{ browser_versions("Firefox Mobile", "fennec", firefox_versions) }}
 
-<h2 id="fennec">Firefox Mobile (Fennec)</h2>
+{{ browser_versions("SeaMonkey", "seamonkey") }}
 
-<ul>
-  <li>Firefox Mobile 36</li>
-  <li>Firefox Mobile 37</li>
-  <li>Firefox Mobile 38{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Firefox Mobile 39{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Firefox Mobile 40{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-</ul>
-
-<h2 id="seamonkey">SeaMonkey</h2>
-
-<ul>
-  <li>SeaMonkey 2.32</li>
-  <li>SeaMonkey 2.33</li>
-  <li>SeaMonkey 2.34{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>SeaMonkey 2.35{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>SeaMonkey 2.36{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-</ul>
-
-<h2 id="thunderbird">Thunderbird</h2>
-
-<ul>
-  <li>Thunderbird 31</li>
-  <li>Thunderbird 37{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Thunderbird 38{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-  <li>Thunderbird 39{{s3 : Using <a href="development-builds">Adblock Plus development
-      builds</a> is recommended.}}</li>
-</ul>
+{{ browser_versions("Thunderbird", "thunderbird") }}