MB-8663: per-replication settings UI

Change-Id: I1203ea7e1c3b0e55b75a2ac471102ab91b5842d4
Reviewed-on: http://review.couchbase.org/28252
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>