convert react-dnd to CJS
convert react-dnd to CJS

Since the tests are run with CommonJS, all ES6 only packages must be converted to CJS.

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