Added five more events with descriptions frm Blades
Youtube OR html5 made consistent
Added change log entry for PR3728
move upload code for assets to AssetsView
STUD-1523
Anton's and Sylvia's edits
Anton's edit, date change
Disable cms test due to failure on master build.
fixing drag and drop
support aria-grabbed and aria-dropeffect
i18n: Make checklists translatable

Now the description & action_text strings in checklists can be extracted and translated.
Addressed review feedback.
Flaky is a plugin for nose that automatically reruns flaky tests.
Merge pull request #3796 from edx/benpatterson/disable-course-export-acc-test

Benpatterson/disable course export acc test
Merge pull request #3790 from edx/ahodges/documentation/DOC156

Ahodges/documentation/doc156
Merge pull request #3802 from louyihua/translation-fix

i18n: Make checklists translatable
Merge pull request #3254 from edx/dcs/a11y-dragdrop

This fixes a few accessibility problems with drag and drop
Set up for new Open edX Installation and Operations Guide

doc-389
Skip brittle test
Modified description of transcript bug fix

As well as updated the index page for usability
Merge pull request #3800 from edx/markhoeber/documentation/release-notes-fix

Modified description of transcript bug fix