MB-11694: default 'upload to' hostname for enterprise

Change-Id: I29cf5b299a7efc305ef12b308beacd6caaa8f421
Reviewed-on: http://review.couchbase.org/39490
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-11691: correct support link for Enterprise Edition

Change-Id: I1546ed8391866ff4fffd48c2ebca1c48b9e70282
Reviewed-on: http://review.couchbase.org/39491
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-11696: show general errors in appropriate tag

Change-Id: I686b045c3eac2576e7a082c003cb9c422cef483a
Reviewed-on: http://review.couchbase.org/39492
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>