[#1829] sort by timestamp, show group & creator in challenge header

src/controllers/challenges.js

@@ -35,8 +35,10 @@ api.list = function(req, res) {
             {group: 'habitrpg'} // public group
           ]
         })
-        .select('name description group members prize')
+        .select('name leader description group members prize')
         .populate('group', '_id name')
+        .populate('leader', 'profile.name')
+        .sort('-timestamp')
         .exec(cb);
     }
   ], function(err, challenges){

views/options/social/challenges.jade

@@ -113,6 +113,8 @@ script(type='text/ng-template', id='partials/options.social.challenges.html')
       .accordion-group(ng-repeat='challenge in challenges|filter:filterChallenges')
         .accordion-heading
           ul.pull-right.challenge-accordion-header-specs
+            li.
+             {{challenge.group.name}} (by <span class='badge'>{{challenge.leader.profile.name}}</span>)
             li {{challenge.memberCount}} Participants
             li(ng-show='challenge.prize')
               // prize