* stable-3.1:
Move documentation for Jetty metrics to a separate section
Improve Jetty thread pool metrics
Fix commentlinks with same prefix in pattern and link
DeleteZombieCommentsRefsTest: Open RevWalk in try-with-resource
Use bugs.chromium.org in gr-linked-text_test
Expose jetty threadpool metrics via dropwizard
Fix editing name & email for service user
Fix accountBelongsToRealm implementation
Fix support for python3 in download_bower.py
NoteDbMigrator: Totally skip migration for orphan changes
Change-Id: I4489643f6d8fe9616978393c773c7e081b225b05