Implement
Merge branch 'master' of https://github.com/WadeOne/EasyTeach

Conflicts:
	EasyTeach.Web/Controllers/QuizController.cs
Merge branch 'master' of https://github.com/WadeOne/EasyTeach
Add style for tablet and mobile for register page
Add style for tablet and mobile for quizz page
Styling add homeworks page
Added style for mobile for login page
#11 Added style for tablet and mobile for error page
Changed login styles
Refactoring styles
Implemented question adding in service
Merge remote-tracking branch 'origin/master'
Fixed layout for add homeworks page
Add Task models. Remove UserType field as redundant
Merge branch 'master' of https://github.com/WadeOne/EasyTeach

Conflicts:
	EasyTeach.Core/EasyTeach.Core.csproj
Added IQuestionModel, fixed key in model
Update course progress dashboard model
Partially implement Lesson API
Change login form position
Fix setPassword and confirmEmail button style