implementing new features for localization of navigation element. First L10N for navigation is SV

activity-data/content/sv/activity.md

@@ -1,6 +1,8 @@
 ---
 title: Ping Kong
 github: mozilla/mozilla-club-activity-ping-kong
+github_label: Visa på Github
+discourse_label: Diskussion
 image: pingkong.png
 competencies:
     - {label: "Webb mekanik", type: "web-mechanics"}

app.js

@@ -227,6 +227,11 @@
             return "";
         }
     });
+    
+    Handlebars.registerHelper('withDefaultValue', function (value, safeValue) {
+        var out = value || safeValue;
+        return new Handlebars.SafeString(out);
+    });
 
 
     // Start the app.

index.html

@@ -35,11 +35,11 @@
                     </li>
 
                     <li>
-                        <a href="http://discourse.webmaker.org/category/clubs">Discussion</a>
+                        <a href="http://discourse.webmaker.org/category/clubs">{{withDefaultValue  activity.meta.discourse_label "Discussion"}}</a>
                     </li>
 
                     <li>
-                        <a href="https://github.com/{{activity.meta.github}}">View on Github</a>
+                        <a href="https://github.com/{{activity.meta.github}}">{{withDefaultValue activity.meta.github_label "View on Github"}}</a>
                     </li>
                     <li>
                         <select class="form-control" id="locales-switch">