Initial draft, need image and xrefs
Added image, completed draft
Change log
Fix some translation tags
new section for June
Merge pull request #3970 from edx/ahodges/documentation/DOC502

Ahodges/documentation/doc502
Skip intermittently failing video test
Merge pull request #3974 from edx/zoldak/fix-translation-tags

Fix some translation tags
make only section name in headers editable
STUD-1679
Merge pull request #3940 from edx/zub/bugfix/std1679-sectionnameeditable

make only section name in headers editable
Merge pull request #3976 from edx/zoldak/skip-video-finish-time-test

Skip intermittently failing video test
Deprecated unit tests from rake to paver
some PR changes
Update testing.md
reports fix, code style changes