fix #12
Rename class
Merge branch 'feature/xu_ly_do_vui_hang_tuan' of https://github.com/npphuongthanh/easylearncode into npphuongthanh-feature/xu_ly_do_vui_hang_tuan

Conflicts:
	application/handlers.py
	application/models.py
Fix contest test when press test code
Merge branch 'feature/edit_learn_page' of https://github.com/nguyenngochan/easylearncode into nguyenngochan-feature/edit_learn_page

Conflicts:
	application/static/js/main.js