Convert admin section controllers to ES6 modules

app/assets/javascripts/admin/controllers/admin-group.js.es6

@@ -0,0 +1,77 @@
+export default Em.ObjectController.extend({
+  needs: ['adminGroups'],
+  members: null,
+  disableSave: false,
+
+  aliasLevelOptions: function() {
+    return [
+      { name: I18n.t("groups.alias_levels.nobody"), value: 0},
+      { name: I18n.t("groups.alias_levels.mods_and_admins"), value: 2},
+      { name: I18n.t("groups.alias_levels.members_mods_and_admins"), value: 3},
+      { name: I18n.t("groups.alias_levels.everyone"), value: 99}
+    ];
+  }.property(),
+
+  usernames: function(key, value) {
+    var members = this.get('members');
+    if (arguments.length > 1) {
+      this.set('_usernames', value);
+    } else {
+      var usernames;
+      if(members) {
+        usernames = members.map(function(user) {
+          return user.get('username');
+        }).join(',');
+      }
+      this.set('_usernames', usernames);
+    }
+    return this.get('_usernames');
+  }.property('members.@each.username'),
+
+  actions: {
+    save: function() {
+      var self = this,
+          group = this.get('model');
+
+      self.set('disableSave', true);
+
+      var promise;
+      if (group.get('id')) {
+        promise = group.saveWithUsernames(this.get('usernames'));
+      } else {
+        promise = group.createWithUsernames(this.get('usernames')).then(function() {
+          var groupsController = self.get('controllers.adminGroups');
+          groupsController.addObject(group);
+        });
+      }
+      promise.then(function() {
+        self.send('showGroup', group);
+      }, function(e) {
+        var message = $.parseJSON(e.responseText).errors;
+        bootbox.alert(message);
+      }).finally(function() {
+        self.set('disableSave', false);
+      });
+    },
+
+    destroy: function() {
+      var group = this.get('model'),
+          groupsController = this.get('controllers.adminGroups'),
+          self = this;
+
+      bootbox.confirm(I18n.t("admin.groups.delete_confirm"), I18n.t("no_value"), I18n.t("yes_value"), function(result) {
+        if (result) {
+          self.set('disableSave', true);
+          group.destroy().then(function() {
+            groupsController.get('model').removeObject(group);
+            self.transitionToRoute('adminGroups.index');
+          }, function() {
+            bootbox.alert(I18n.t("admin.groups.delete_failed"));
+          }).finally(function() {
+            self.set('disableSave', false);
+          });
+        }
+      });
+    }
+  }
+});