tooltipise.js: Handle AJAX load of more videos

New videos loaded on a page over AJAX will not have title tooltips.
Refresh tooltip titles when more videos are loaded.

Just use a timeout to make things simple. The tooltipiser will wait 3
seconds between requesting more videos and refreshing titles. This will
generally provide enough time to load the videos into the DOM unless the
network connection is really slow.
manifest.json: Increase to v0.0.2

Update fixes bug where new videos loaded via AJAX would not be
tooltipised.