Merge branch 'stable-3.3' into stable-3.4

* stable-3.3:
  Count uploader as a resolved reviewer
  UI: Don't suggest unsupported system groups
  Document that configured groups must be visible to uploader
  Bazel: Remove unnecessary plugin_name parameter

Change-Id: I7090c8b547deebd094a679b1d5a3c1a6ca1b2c49