Merge branch 'master' into modify-chat-to-use-consolidated-users

...k/presentation/acornmediaplayer/acornmediaplayer.base.css

.../presentation/acornmediaplayer/jquery.acornmediaplayer.js

...n/acornmediaplayer/themes/access/access-captions-dark.png

...tation/acornmediaplayer/themes/access/access-captions.png

...mediaplayer/themes/access/access-exit-fullscreen-dark.png

...acornmediaplayer/themes/access/access-exit-fullscreen.png

...acornmediaplayer/themes/access/access-fullscreen-dark.png

...tion/acornmediaplayer/themes/access/access-fullscreen.png

...tion/acornmediaplayer/themes/access/access-pause-dark.png

...sentation/acornmediaplayer/themes/access/access-pause.png

...ation/acornmediaplayer/themes/access/access-play-dark.png

...esentation/acornmediaplayer/themes/access/access-play.png

...acornmediaplayer/themes/access/access-transcript-dark.png

...tion/acornmediaplayer/themes/access/access-transcript.png

...ion/acornmediaplayer/themes/access/access-volume-dark.png

...cornmediaplayer/themes/access/access-volume-full-dark.png

...ion/acornmediaplayer/themes/access/access-volume-full.png

...entation/acornmediaplayer/themes/access/access-volume.png

...sentation/acornmediaplayer/themes/access/acorn.access.css

...acornmediaplayer/themes/access/button-background-dark.png