Issue 5191 - Add Terms of Use to adblockplus.org homepage

includes/index.tmpl

 title=Adblock Plus - Surf the web without annoying ads!
 noheading=True
 localefile=index
 
 {#
  # This file is part of the Adblock Plus website,
  # Copyright (C) 2006-2017 eyeo GmbH
  #
  # Adblock Plus is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License version 3 as
@@ skipping 49 matching lines @@
           <div class="sprite"></div>
           {{"It's free for users and open source (<a href=\"https://www.gnu.org/licenses/gpl.html\">GPLv3</a>)"|translate("gplv3-license")}}
         </li>
         <li id="feature-maxthon" itemprop="featureList">
           <div class="sprite"></div>
           {{"Integrated by default in"|translate("s11")}} <a href="http://www.maxthon.com/" target="_blank">{{"Maxthon Cloud Browser"|translate("s12")}}</a>
         </li>
       </ul>
     </div>
 
-    <p class="terms-message">
+    <p id="terms-message">
       {{ "By clicking the Agree and Install button below, you agree to our <a href=\"terms\">Terms of Use</a>." | translate("terms-message", "Terms of use message") }}
     </p>
 
     <h3 class="edge-message">
       {{"Adblock Plus for Microsoft Edge requires Windows 10 Anniversary Update"|translate("edge-message")}}
     </h3>
 
     <div id="install">
       <a class="install-button" href="https://update.adblockplus.org/latest/adblockplusfirefox.xpi" id="install-firefox">{{"Agree and Install for Firefox"|translate("s13")}}</a>

[saroyanm, 2017/05/02 12:48:30]

what about ? 
{{"Agree and Install for <fix>Firefox</fix>"}}? 
I think we can reuse the string, otherwise we will need to translate for each
Browser separately.

While we already updating the text, maybe we can make this bit more optimized
already.

[saroyanm, 2017/05/02 14:16:40]

This doesn't make sense.
We can not modify value of fix for each separate string.

[juliandoucette, 2017/05/02 14:42:35]

Acknowledged.

       <a class="install-button" href="https://chrome.google.com/webstore/detail/cfhdojbkjhnklbpkdaibdccddilifddb" id="install-chrome" onclick="chrome.webstore.install(); return false;">{{"Agree and Install for Chrome"|translate("s14")}}</a>
       <a class="install-button" href="https://addons.opera.com/extensions/details/opera-adblock/?display=en-US" id="install-opera">{{"Agree and Install for Opera"|translate("s15")}}</a>
       <a class="install-button" href="android-install" id="install-android">{{"Agree and Install for Android"|translate("s16")}}</a>
       <a class="install-button" href="https://update.adblockplus.org/latest/adblockplusie.exe" id="install-internet-explorer">{{"Agree and Install for Internet Explorer"|translate("s17")}}</a>
       <a class="install-button" href="https://update.adblockplus.org/latest/adblockplussafari.safariextz" id="install-safari">{{"Agree and Install for Safari"|translate("s18")}}</a>
       <a class="install-button" href="https://chrome.google.com/webstore/detail/cfhdojbkjhnklbpkdaibdccddilifddb" id="install-yandex-browser" onclick="chrome.webstore.install(); return false;">{{"Agree and Install for Yandex Browser"|translate("s19")}}</a>
       <a class="install-button" href="ms-windows-store://pdp/?ProductId=9nblggh4r9nz" id="install-edge">{{"Agree and Install for Microsoft Edge"|translate("install-edge")}}</a>
     </div>
 
     <div id="other-platform">
@@ skipping 276 matching lines @@
       <h2>{{"Be notified when Adblock Plus for Microsoft Edge is available!"|translate("abp-for-edge-be-notified")}}</h2>
 
       <p>
         {{"Microsoft Edge <a href='https://wpdev.uservoice.com/forums/257854-microsoft-edge-developer/suggestions/6508820-javascript-browser-extensions'>does not yet support extensions</a>. However, you can be sure that a version of Adblock Plus for Microsoft Edge will be released as soon as possible. While you're waiting, you may want to try the latest version of Adblock Plus for Internet Explorer."|translate("ms-edge-description")}}
       </p>
     </div>
   </div>
 </section>
 
 <script src="/js/index.js"></script>