MB-9477: changed text for Metadata Purge Interval

Change-Id: I50038a5ea64b89609daf4b28ed53cc88d07f4ffe
Reviewed-on: http://review.couchbase.org/30992
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-9477: converter from short to full decimal representation

Change-Id: I8b28c2715f681c24531e5b0eb0db64e2a6018cff
Reviewed-on: http://review.couchbase.org/30993
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>