background button: remove click to pause function, leaving only the media control button (refs #231)
background button: remove unused style
background button: change button icon to a button tag to keep consistency
background button: remove pointer event intercepting for non interactive elements (refs #231)
media control: remove pointer event intercepting for non interactive elements
poster: prevent click from bubbling (refs #231)
add click to pause container plugin (refs #231)
click to pause: add settings update listener to add pointer cursor to container (refs #231)
container: add pointer cursor style (refs #231)
loader: enable click to pause plugin (closes #231)