Fixes #4 - Update primary and footer navigation contents

includes/navbar.tmpl

 {% from "macros/pageitem" import pageitem %}
 
 <nav id="navbar">
   <div class="container">
     {{ "index" | linkify(id="navbar-logo") }}
       <img
         src="/img/navbar-logo.png"
         srcset="/img/navbar-logo.svg 2x">
       <span>{{ "Adblock <strong>Plus</strong>" | translate("navbar-logo-text", "Navbar logo text") }}</span>
     </a>
     <a href="#" id="navbar-menu-toggle">
       <img
         src="/img/menu-toggle.png"
         srcset="/img/menu-toggle.svg 2x">
     </a>
     <ul id="navbar-menu">
-      {% for pagename in ["about", "features", "bugs", "contribute"] %}

[saroyanm, 2018/02/05 15:44:10]

In the Issue it says:
"Features are getting merged on to the homepage", I can't see that moved into
the homepage, or am I missing something ?

According to the issue, the features link is not redundant until features are
moved to homepage.

[saroyanm, 2018/02/05 15:44:10]

What was the reason of making the Issue reporting less accessible ?

I can ask that in the issue itself, I assume this was run through the QA team as
well?

[ire, 2018/02/05 16:15:01]

Yes, this change will not be pushed to master until all the changes in the
milestone are completed. 

See milestone -
https://gitlab.com/eyeo/web.adblockplus.org/issues?milestone_title=adblockplu...

[ire, 2018/02/05 16:15:02]

Yes it's been through the QA team. I don't know specifically the reason for
removing it, but as you said you can bring it up in the issue for clarification.

+      {% for pagename in ["about", "contribute"] %}
         <li>
           {{ pagename | linkify }}{{ get_string(pagename, "menu") }}</a>
         </li>
       {% endfor %}
+      <li>
+        {{ "documentation" | linkify }}{{ get_string("help", "menu") }}</a>
+      </li>
       <li id="navbar-locale-menubar">
         <a href="#" id="navbar-locale-selected">
           {{ config.get("langnames", locale) }} ({{ locale | to_og_locale | to_og_location }})
         </a>
         <ul id="navbar-locale-menu">
           {% for available_locale in available_locales %}
             <li>
               {{ page | linkify(available_locale) }}
                 {{ config.get("langnames", available_locale) }} ({{ available_locale | to_og_locale | to_og_location }})
               </a>
             </li>
           {% endfor %}
         </ul>{# #navbar-locale-menu #}
       </li>
     </ul>{# #navbar-menu #}
   </div>{# .container #}
 </nav>{# #navbar #}