Removed default values from renderer configs + formatting

@UniversalMediaServer/developers I'm making a pull request for this because there have been a huge amount of changes in here and maybe I missed something or made a mistake that you guys will see.
There should ideally be no functional changes in here, just formatting and removing default values.

There are a few reasons I've been wanting to do this: it makes it easier to compare renderer configs, eliminates outdated comments by keeping all of the generic (non-renderer specific) ones in PS3.conf, and hopefully having smaller renderer configs will make them seem a little less daunting to users looking to make their own.

If you guys have any suggestions for formatting of the renderer configs please feel free to make them.
OK cool, thanks for clarifying :)