Fix fallback for 'Visit site' link when repo.website is missing

Author: Clemo97

themes/vocabulary_theme/templates/blocks/featured-projects.html

@@ -15,7 +15,7 @@ <h2 class="is-paddingless level-left">
           <article class="card entry-post vertical project-index">
             <div class="card-content">
               <h4 class="card-title b-header"><a href="{{ repo.url }}">{{ repo.english_name }}</a></h4>
-              <a class="button is-text tiny site-link" href="{{ repo.website }}">
+              <a class="button is-text tiny site-link" href="{{ repo.website  or repo.url}}">
                 <span>Visit site</span>
                 <i class="icon external-link"></i>
               </a>

themes/vocabulary_theme/templates/project_list.html

@@ -23,7 +23,7 @@ <h2 class="is-paddingless level-left">
               <article class="card entry-post vertical project-index">
                 <div class="card-content">
                   <h4 class="card-title b-header"><a href="{{ repo.url }}">{{ repo.english_name }}</a></h4>
-                  <a class="button is-text tiny site-link" href="{{ repo.website }}">
+                  <a class="button is-text tiny site-link" href="{{ repo.website or repo.url}}">
                     <span>Visit site</span>
                     <i class="icon external-link"></i>
                   </a>