Removed biased language

[akeller]

Request to modify terms from Blacklist vs. whitelist to blocklist vs. allowlist in README, repo name, and code.

• modify README text
• coordinate doc article name & URL changes
• modify code
• rebuild JAR & replace
• rename repo
• update repo description

[akeller]

Working through some of this in a fork for a future PR - https://github.com/akeller/wse-plugin-blackliststreams