Replace charged language "whitelist/blacklist"

[obfuscurity]

This PR replaces #1570, fixing a merge conflict.

Addressing https://github.com/graphite-project/graphite-web/issues/1569

Related to https://github.com/graphite-project/carbon/issues/567 / https://github.com/graphite-project/carbon/pull/568

[codecov-io]

Current coverage is 65.61% (diff: 95.23%)

Merging #1700 into master will not change coverage

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  Misses         1892       1892          
  Partials        213        213          

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[obfuscurity]

I'm pushing this back to the next milestone for now. I would like to see this go in but after working on it for a day I feel like there's room for improvement in terms of naming clarity. I've gone through it a few times and caught myself getting confused with some of the functions/settings.

[obfuscurity]

refs https://github.com/graphite-project/carbon/pull/591

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.