Minify (and re-minify) JS libraries (in sync with gallery3-vendor).
- minified jQuery libraries.
- re-minified flowplayer, json2-min, and extjs using new minimizer (more efficient, keeps copyrights).
Merge pull request #185 from shadlaws/minifyjs_20130304

Minify (and re-minify) JS libraries (in sync with gallery3-vendor).