first dummy implementation of using the mediaelement.js player
implement play callbacks and play, play range and puase
fixed some bugs
don't append to parent: otherwise closing the visualizer does not work properly
use the new mediaelement.js visualizer as audio visualizer
cleaning up the old code
larger buffer and also always add the "Accept-Ranges" Parameter
adding mediaelement.js to the explicit dependency list
updating to vaadin 7.1.1
Use mediaelement.js to show video/audio

fixes #172