Add Backbone model and collection for teams.

lms/djangoapps/teams/static/teams/js/collections/team.js

+;(function (define) {
+    'use strict';
+    define(['common/js/components/collections/paging_collection', 'teams/js/models/team', 'gettext'],
+        function(PagingCollection, TeamModel, gettext) {
+            var TeamCollection = PagingCollection.extend({
+                initialize: function(options) {
+                    PagingCollection.prototype.initialize.call(this);
+
+                    this.course_id = options.course_id;
+                    this.server_api['course_id'] = function () { return encodeURIComponent(this.course_id); };
+                    this.server_api['order_by'] = function () { return this.sortField; };
+                    delete this.server_api['sort_order']; // Sort order is not specified for the Team API
+
+                    this.registerSortableField('name', gettext('name'));
+                    this.registerSortableField('open_slots', gettext('open_slots'));
+                },
+
+                model: TeamModel
+            });
+            return TeamCollection;
+    });
+}).call(this, define || RequireJS.define);

lms/djangoapps/teams/static/teams/js/models/team.js

+/**
+ * Model for a team.
+ */
+(function (define) {
+    'use strict';
+    define(['backbone'], function (Backbone) {
+        var Team = Backbone.Model.extend({
+            defaults: {
+                id: '',
+                name: '',
+                is_active: null,
+                course_id: '',
+                topic_id: '',
+                date_created: '',
+                description: '',
+                country: '',
+                language: '',
+                membership: []
+            }
+        });
+        return Team;
+    });
+}).call(this, define || RequireJS.define);