Fix whitelisting subreddits from the NSFW filter
Remove redundant CSS
commentPreview: Remove commented-out code
Merge pull request #1708 from mc10/comment-preview

commentPreview: Remove commented-out code
Merge pull request #1696 from erikdesjardins/whitelist-nsfw

Fix whitelisting subreddits from the NSFW filter
removed some seemingly unnecessary/weird logic trying to detect default colors, as it was computationally expensive.

minor style cleanup