Custom resource folders

You can now organize your resources into folders.  In 'My Resources', start dragging any resource to show the list of folders in the top left.  Drag the resource onto an existing folder or onto 'add new folder' to create a new one.  You can use the 'Ctrl' key (the command key for MacOS users) to select several resources and drag them together.

Other improvements include improved ordering of student groups on the home page, ordering of tasks in the markbook and updates for Apple users.