CMS youtube transcript tests call GET twice & need different responses on each of the two calls
Current solution (setup_caption_responses) decides what to return on basis of call number.
Former solution (mock_request_get()) decided what to return on the basis of kwargs, which would differ on first vs. second call
- Moving xmodule folder to root as we're dissolving sub-projects of common folder in edx-platform
- More info: https://openedx.atlassian.net/browse/BOM-2579
- -e common/lib/xmodule has been removed from the requirements as xmodule has itself become the part of edx-platform and not being installed through requirements
- The test files common/lib/xmodule/test_files/ have been removed as they are not being used anymore
