RFR: 599: Unverified reviews should not count towards jcheck

Tue Sep 8 13:20:43 UTC 2020

The usage of the `/reviewer add` command has apparently been a bit confusing. This change renames the `add` sub command
to `create` instead to clarify the intent better. Such manually credited reviewers will also not count towards the
"formal" review requirements as specified by the jcheck configuration.

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Commit messages:
 - Rename the reviewer add subcommand to credit

Changes: https://git.openjdk.java.net/skara/pull/807/files
 Webrev: https://webrevs.openjdk.java.net/?repo=skara&pr=807&range=00
  Issue: https://bugs.openjdk.java.net/browse/SKARA-599
  Stats: 74 lines in 6 files changed: 20 ins; 4 del; 50 mod
  Patch: https://git.openjdk.java.net/skara/pull/807.diff
  Fetch: git fetch https://git.openjdk.java.net/skara pull/807/head:pull/807

PR: https://git.openjdk.java.net/skara/pull/807