UMD language files

This changes the language files to UMD rather than requiring an extra build step.

Unfortunately, because this adds a closure to every file, the history is going to be broken a bit as each file is essentially completely rewritten as far as git is concerned.

The minified versions of the individual languages has also been removed as well.

This also simplifies the gruntfile and removes the need for a few of the moment-specific grunt tasks.