Updated help link and content of container page
Annotation Tools: Thumbnail check breaks on creation

 - Fixed second similar function.

Conflicts:
	common/static/js/vendor/ova/OpenSeaDragonAnnotation.js
Merge pull request #5395 from lduarte1991/lduarte-harvardx-pr30

Annotation Tools: Fixes issue - Thumbnail check breaks tool on creation
skipping the firefox version validation if firefox is not the browser being used
Crude solution to allowing new styles on White Label about pages.
Merge pull request #5397 from edx/hotfix-annotations

Hotfix annotations
Merge remote-tracking branch 'origin/release' into merge-conflicts-release

Conflicts:
	common/static/js/vendor/ova/OpenSeaDragonAnnotation.js
Merge pull request #5398 from edx/sanchez/fix_about_page_header

Allowing new styles on White Label about pages.
Merge pull request #5304 from edx/markhoeber-doc910

Updated help link and content of Studio container page
Merge pull request #5400 from edx/merge-conflicts-release

Merge conflicts release
Merge pull request #5391 from edx/clytwynec/skip_firefox_version_check_if_not_using_firefox

skipping the firefox version validation if firefox is not the browser be...
Add molecule viewer tool to Exercises and Tools section
Merge pull request #5273 from edx/sylvia/docs/DOC-759

Sylvia/docs/doc 759
TNL-272: Fix double loading of cms-modules.js.