Some fixes.
Merge branch 'master' of https://github.com/gkatai/Timetable

Conflicts:
	src/TimetableWebPage/Views/Classes/Index.cshtml
	src/TimetableWebPage/Views/Home/Manage.cshtml
	src/TimetableWebPage/Views/Lessons/Index.cshtml
	src/TimetableWebPage/Views/Rooms/Index.cshtml
	src/TimetableWebPage/Views/Subjects/Index.cshtml
	src/TimetableWebPage/Views/Teachers/Index.cshtml