Fixed unit tests for create_section_form, get_enrollments_without_test_student , remove_section and created separate test files for theses. Also added new test cases for check_resource_link_id and validate_course_id
removed comment
Code review feedback
Merge branch 'develop' into feature/sections_sapna_unittests

# By Bermudez, Jaime (2) and others
# Via Yip, Josie (2) and others
* develop:
  Update from code review and added 1 more test case to be more specific when course ids’ numbers don’t match.
  Update unit tests and added new unit tests
  Update error message when failing to retrieve section details.
  Section details view logs exception and renders an error page if retrieving a section raises an exception.  Split tests for this method into a separate file.
  changed the field name for required reading from "reading" to "required."
Some minor fixes
Merge branch 'develop' into feature/sections_sapna_unittests

# By cms994
# Via cms994 (2) and cmsnowden (1)
* develop:
  incorporate changes from code review - remove extraneous test - clarify logging in views.py
  incorporated suggestions from code review.
  removed extraneous includes
  fixed old remove_from_section tests to include resource_link_id added four new tests  to test resource_link_id match, course_id match, conclude_enrollment success and failure views.py - cleaned unnecessary exception checking from remove_from_section to put it  in line with similar functions
Merge pull request #112 from Harvard-University-iCommons/feature/sections_sapna_unittests

Feature/sections sapna unittests