MB-10204: updated Auto Compaction settings UI

Change-Id: Ia7b896d6eb85cd6972da0cfacac46f8778c6e4f7
Reviewed-on: http://review.couchbase.org/39537
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
make settings styles similar to wizard styles

Change-Id: Id0a8865bc0379dab98d5e66fbf16fcaeb30ab0de
Reviewed-on: http://review.couchbase.org/40177
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>