Fix: BigQuery default location is null and not US (#2841)
Fix: BigQuery default location is null and not US (#2841)

If no location is specified BigQuery uses US or EU. If we pass US
it breaks querying for EU users.
getredash/redash,chriszs/redash,44px/redash,chriszs/redash,denisov-vlad/redash,getredash/redash,denisov-vlad/redash,alexanderlz/redash,44px/redash,denisov-vlad/redash,44px/redash,moritz9/redash,moritz9/redash,getredash/redash,alexanderlz/redash,getredash/redash,getredash/redash,chriszs/redash,denisov-vlad/redash,alexanderlz/redash,alexanderlz/redash,chriszs/redash,moritz9/redash,44px/redash,moritz9/redash,denisov-vlad/redash