Added Poll.user_has_answered test
Added poll.view tests
Added missing HTTP GET tests for forum.views
Added courses.show_course_students test when HR.
Added extra tests for login/logout in students.views
Added students.views user_profile view test.
Added students.views.edit_profile tests
Added extra tests for login/logout
Added students.views.assignment tests for when user is a teacher
Added student.views.set_check_in test for when tokens differ.
Added basic test for students.views.solutions
Added basic students.tests for forms
Removed unneeded imports/code from students.tests_views
Moved a test in students.test_forms for TODO
Changed form students.AddNote
Merge pull request #29 from HackBulgaria/extend_tests

Extended tests