Set loaded=true after creating ui views
Set loaded=true after creating ui views

ellisonbg/nbgrader,jupyter/nbgrader,EdwardJKim/nbgrader,jupyter/nbgrader,jupyter/nbgrader,jhamrick/nbgrader,jhamrick/nbgrader,ellisonbg/nbgrader,EdwardJKim/nbgrader,EdwardJKim/nbgrader,jupyter/nbgrader,jhamrick/nbgrader,ellisonbg/nbgrader,jhamrick/nbgrader,ellisonbg/nbgrader,EdwardJKim/nbgrader,jupyter/nbgrader