Merge pull request #903 from sravanthi1/dev-branch

"Id's, alttext and titles updated for these files."
Removed "Flashing" "Motion Simulation" and "Sound" from "Access Hazard" section in "Add Tags"
Merge remote-tracking branch 'upstream/dev-branch' into dev-branch
Merge pull request #904 from chandrasekharv/dev-branch

Removed "Flashing" "Motion Simulation" and "Sound" from "Access Hazard" section in "Add Tags"
"[System-Content] the source should be the username of the creator of the question changes fixed and Don't autoplay videos in collection (Accessibility issue)Player: Study Experience Fixed."