Merge branch 'development' into refcount

src/dnslib/hash/cuckoo-hash-table.c

src/dnslib/hash/cuckoo-hash-table.h

src/dnslib/node.c

src/dnslib/tests/dnslib/cuckoo_tests.c

src/dnslib/tests/dnslib/zone_tests.c

src/dnslib/zone-contents.c

src/dnslib/zone.c

src/dnslib/zonedb.c

src/knot/server/name-server.c