Changes were made to the HTML h tags - Issue 1451 (#2423) ...

* capture status

* Changes were made to the HTML h tags in order to make it more accessibility friendly and compliant

* Changes to make merge with development possible

* Fixe of the empty class

removed extra div tag (#2290)

Fix for bugs arising for Super Admins editing Departments of an Oreganisation they did not belong to. ...

Fix for issue #2088.

Add functionality for School/Department for an organisation. ...

Changes:
    - added a Department model whose instances belong to an org and require name.
    - added a DepartmentController and views for create, edit/update and a index view which is a tab
      of 'Organisational Details'.
    - added the optional attribute department_id to User model.
    - added Rspec tests.
    - updated app/controllers/registrations_controller.rb, app/models/org.rb and
      app/models/user.rb to get rid of outstanding Rubocop warnings

    Fix for issue #2088.