Some bugs with quiz page fixed
Merge branch 'master' of https://github.com/sergey-zakharov/EdPlatform
Basic authorization from Django added
Merge branch 'master' of https://github.com/sergey-zakharov/EdPlatform

Conflicts:
	edplatform/db.sqlite3
	edplatform/edplatform/urls.py
	edplatform/teacher_constructor/templates/header.html
	edplatform/teacher_constructor/templates/login_page.html
	edplatform/teacher_constructor/views.py