Merge branch 'conf_singleton_misuse' into 'master'

src/knot/common/stats.c

src/knot/ctl/commands.c

src/knot/dnssec/context.c

src/knot/dnssec/zone-events.c

src/knot/dnssec/zone-events.h

src/knot/events/handlers/dnssec.c

src/knot/events/handlers/load.c

src/knot/events/handlers/refresh.c

src/knot/events/handlers/update.c

src/knot/journal/journal_basic.c

src/knot/journal/journal_basic.h

src/knot/nameserver/process_query.c

src/knot/server/tcp-handler.c

src/knot/updates/zone-update.c

src/knot/updates/zone-update.h

src/knot/zone/zone.c

src/knot/zone/zone.h

src/utils/kzonesign/main.c

tests/knot/test_journal.c