Adds jplayer driver (still very much a work in progress)
Get wav file working in jPlayer
Comment out loop section that was not being used and rename an html element
Remove hard-coded sound file from jPlayer model driver
Switch my initial hacked-together jPlayer driver to a real driver

Complete with two components: audioManager.vwf.yaml and videoManager.vwf.yaml
Remove declaration of ifPrototypeGetId which is already defined in utility.js

Also, caught a place where we weren't guarding to make sure an object existed before referencing it.
Merge pull request #379 from virtual-world-framework/branch/jplayer

Branch/jplayer