Changed the youtubeSlideGenerator's preload() function to NOT call checkIfBuffered(). Instead, it is called outside, since the timeout function for when to stop waiting also occurs outside and will need to call the check function anyway...avoid having multiple instances of the function running at one time
Added a replay button.
commiting changes before moving on to testing branch for youtube tests
While it's possible to replay videos now...they aren't properly reverting back to their original start points...
Think the replay thing is working, but not entirely sure, since there was a strange unmuting bug earlier that is NOT being reproduced. Needs more testing before pushing onto master