removed sugar.js, port functionality to moment and underscore.js

bring in latest ace from local so we don't mess up with https

app/assets/javascripts/admin/models/email_log.js

@@ -21,7 +21,7 @@ Discourse.EmailLog.reopenClass({
     Discourse.ajax("/admin/email/logs.json", {
       data: { filter: filter }
     }).then(function(logs) {
-      logs.each(function(log) {
+      _.each(logs,function(log) {
         result.pushObject(Discourse.EmailLog.create(log));
       });
     });