Bug fixes and effeciency enhancements

* resumeLiveStreams() function added to be used when exiting fullscreen
view
* When entering fullscreen view in live view, all other streams in the
background are stopped and then resumed when you exit fullscreen mode
* Page refresh button handler had a typo in which meant that the page
wouldn't always refresh properly due to the open streams
* Page refresh delay increased to allow all live streams to terminate