Fixes #91 - Homepage duplicate in Polish for SEM

includes/as-mentioned.tmpl

 {% set media_coverage = [
   {
     "publisher": "Media Post",
     "link": "http://www.mediapost.com/publications/article/289691/adblock-plus-comes-to-new-york.html",
     "link_title": "Media Post article about Adblock Plus",
     "image": "mediapost",
     "image_alt": "Media Post logo"
   },
   {
     "publisher": "NY Times",
@@ skipping 22 matching lines @@
     "link_title": "Business Insider article about Adblock Plus",
     "image": "business-insider",
     "image_alt": "Business Insider logo"
   }
 ] %}
 
 <div id="media-section" class="bg-primary section">
   <div class="container">
     <div id="media">
       <header id="media-header">
-        <h2>{{ "As Mentioned On:" | translate("as-mentioned-header", "header") }}</h2>
+        <h2>{{ "As Mentioned On" | translate("as-mentioned-header", "header") }}:</h2>
         <small>{{ "(Links open in a new window)" | translate("as-mentioned-title", "tooltip") }}</small>
       </header>
       <ul id="media-list" class="unstyled">
         {% for item in media_coverage %}
         <li>
           <a
             href="{{ item.link }}"
             target="_blank"
             title="{{ item.link_title | translate(item.publisher + '-tooltip', 'tooltip') }}">
             <img
               src="/img/media/{{ item.image }}.png"
               srcset="/img/media/{{ item.image }}-2x.png 2x"
               alt="{{ item.image_alt | translate(item.publisher + '-alt', 'alt text') }}">
           </a>
         </li>
         {% endfor %}
       </ul>
     </div>
   </div>
 </div>