edit learn admin page
Merge pull request #46 from HuynhThan/feature/Edit_trang_game

 Edit trang game
Merge pull request #47 from nguyenngochan/feature/edit_visualization_page#3

edit admin page#2
fix admin constest and autocomplete code
Update demo
Delete zoom button, template form modal
Update exercise
Update user api
Merge branch 'develop' of https://github.com/EasyLearnCode/easylearncode into develop

Conflicts:
	api/restful.py
- Add more security for api
Fix levels
merge
Fix link
Fix recurse obj
Add api to application
Fix practice page
Change name mode learn
fix style lesson checkpoint wrapper
Change mixin indexOf to core, fix practice nextCheckpoint
thay doi en.js game