Added jPlayer 2.5.0

Source: http://jplayer.org/latest/jQuery.jPlayer.2.5.0.zip
Jplayer.swf filename left as-is (i.e., not lowercase) to follow previous versions.
2x .js files (popcorn.jplayer.js and jquery.jplayer.inspector.js) minified and added as not minified in the source.