Query UI should show correct status for index that is building

1. Create a cluster of 8 node where 1 node is query + index.
2. Create about 300M document in the cluster
3. From query UI execute query -

create index index1 on `bucket-1`(body) using gsi;

4. Query output has output -

At this stage the index is in building stage and since the data is large, it will keep showing the same message.
Message is quite confusing. The message needs to be improved for Create/Delete statements versus select statements, to let the use know the index has been created successfully as it is shown on cbq command line.

Also, since the session is stored for the browser, user will be all more confused and will tend to cancel the query, which will not have any effect on index building.