create course gorups properly on course import
STUD-1595
Skip language changing tests
Merge pull request #3756 from edx/zoldak/disable-flaky-test

Skip language changing tests
Merge pull request #3640 from edx/zub/bugfix/std1595-importcoursepermission

remove redundent code on course import
disabled test_lms.py:XBlockAcidNoChildTest.test_acid_block
Update Video docs to reflect new UI
Merge pull request #3740 from edx/sylvia/docs/BLD-1032

Update Video component to reflect new UI
Merge pull request #3758 from edx/clytwynec/disable-XBlockAcidNoChildTest

disabled test_lms.py:XBlockAcidNoChildTest.test_acid_block
Tolerance expressed in percentage now computes correctly. [BLD-522]
Modified and extended tests on percentage expressed tolerance.
Addressed comments.
All tests pass now.
Added tests for compare_with_tolerance
Put unit tests of util in their own file.