fix tests
fix tests

`app/views/dashboard/index.html.haml` is rendered both when at the
root('/') and at '/course_creator'. Both of these routes require the react
root DOM element. This makes sure that the react root is inserted for
both the routes

WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard,WikiEducationFoundation/WikiEduDashboard