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There are a few reasons I've been wanting to do this: it makes it easier to compare renderer configs, eliminates outdated comments by keeping all of the generic (non-renderer specific) ones in PS3.conf, and hopefully having smaller renderer configs will make them seem a little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.
@ler0y do you know why this is in here? Wouldn't it be better to remove the tiff line so that UMS transcodes tiff images?